Unfortunately, a lot of calls with them will be surprisingly longer and less efficient than you would otherwise expect, including just making changes to the dates of flights within your itinerary. But you can get enormous value out of this ticket and it is still a good value even if you spend a lot of time on hold with American Airlines.

Are you able to share the route and the pricing (base cost and surcharges?)

There are advantages for Qantas members as well.

In which currency did you see the pricing initially? You probably could have simply paid in that currency, unless your credit card charges a currency conversion fee.

my RTW departs OSL so I was expecting to pay in NOK, but I was charged in USD. Itinerary on aa.com shows NOK

While on hold I found other posts in this thread that mention charges in USD for people with US credit cards. Surprised but no big deal. My card has no FX fees.

I eventually booked a DONE4 ticket directly on the OW site, so ticketed via Qantas, as it was not overly complicated. Then came recent events and my QR flights from OSL to DPS via LHR and DOH were cancelled. I was rebooked on an impossible connection, where the LHR-DOH flight departed before the OSL-LHR flight that was supposed to precede it.

I called Qantas to rebook, keeping the original OSL-LHR, and then asking the agent to book me LHR-HKG and then from HKG-DPS the following day, with an overnight in Hong Kong. He was knowledgeable enough, but told me that there was no D class availability for most of that day's LHR-HKG flights, including the one I wanted to travel on that matched up with the BA783 from OSL landing at 18:30. However, all that day's LHR-HKG flights have D class as per ExpertFlyer, and I'm also able to price up my desired itinerary just fine on the Oneworld tool today.

Is there any trick to requesting the flights to get him to see the same availability? Perhaps asking him to search for OSL-xLHR-HKG, and then a separate HKG-DPS? Or any other recommendations?

I'm sorry, I don't understand why you knowingly booked directly on the Oneworld site instead of AA RTW desk (whom you previously contacted) or perhaps with one of the handful of RTW-specialized travel agents cited in this forum.. and given the countless issues reported about QF agents servicing RTW tickets, why are you in this situation?

Any OW RTW ticket that touches or overflies the Middle East has the potentiation, if not the certainty, to become "complicated".

As post above your problem is self inflicted.

As has been discussed a lot, an unwelcome development in the past couple of years is the implementation of additional limitations on availability beyond what is visible using Expert Flyer or similar tools. It's clear that airlines have the ability to impose availability limitations based on the point of commencement/origin of an itinerary. There might also be an ability to limit based on the type of fare (this is murky). This is on top of the usual married segments limitations. You can verify that this is occurring by asking an agent to check availability of desired flights in a new record. If the flight has plenty of inventory in a new record but none in your record, that's proof it is happened. The online booking engine seems to ignore this, but it's unclear what would happen if you booked a new record using it where some segment had no availability in your itinerary. It might get ticketed or the segments might come back unconfirmed and be a problem.

Unfortunately, there's not much you can do other than book alternate flights or keep those segments open and hope your desired flights become available closer to departure.

I booked an ex-OSL RTW where the first flight is OSL-DOH in the fall. A few weeks ago QR reduced the frequency of the flight from daily to 4x week, and my flight was cancelled, but I was able to shift it and the following flight to be one day later. The trip is structured with multiple breaks of a few months, with positioning flights, so pushing the first two flights one day later only affected one positioning flight and nothing else. So not a big deal in my case.

Dealing with qantas for these tickets is a well documented world of pain with many technically allowable changes unlikely to be possible. You may not realise it but asking others to help you share that burden for a still not great outcome is asking a lot. It sounds like you haven't flown your first segment yet. Honestly, just cancel and rebook with AA or an agent.

Just adding a new bullet point, helped a close friend book a new ex-TYO DONE6. Plated on QR stock, $8440 plus agent fee.

HND-DFW(JL)-GRU(JL code AA)-DFW(JL Code AA)-PUJ(AA)-JFK(QR Code AA)-DOH(QR)-CPH(QR)-DOH(QR)-DUB(QR)-DOH(QR)-CPT(QR)-DOH(QR)-AKL(QR)-SYD(QF)-SIN(AY code BA)-HND(JL)

It's an expensive one because DONE6, but he really wanted South America, South Africa, and Oceana. And at the end of the day, it's cheaper than the plan he initially approached me with which was only Asia and Oceana. I love RTWs for this.

He'll get in the vicinity of 180-190k AA miles and LPs from this ticket since only one short segment is AA coded, all others except the AKL-SYD are high earners. (He's starting from only 2k AA LP's but is using the Citi card currently to generate some before the trip) It's not 100% optimized for miles but he wanted a combination of high earnings plus going to some of his bucket list destinations, so is a very pleased man. I'm helping him with some side trips on stopovers now so that will put him well over the 200k for AA EXP even without the card spend. Welcome another AA EXP to the ranks!! :D (but like me, we're Japan based, so won't take a lot of upgrades away from PPro and below, I end up giving my SWUs to friends more often than not, even converted a very loyal JL friend to AA because of that)

Nice. Just curious why PUJ-JFK-DOH rather than, say, PIJ-DFW-DOH. DFW-DOH is longer, so more time to enjoy Qsuite while earning more miles and LPs.

Partially due to poor availability on the DFW route, but also he needed some time in NYC and there weren't any more free segments to go PUJ-DFW-JFK or v.v. if there was a free segment I would have had him go PUJ-JFK-LAX-DOH

Want to give a shout out to dutch_122 - not sure if allowed within the rules of this forum? - for helping with the following first time DONE trip that we are part way through, highly recommend him:

We had a bunch of trips for 2026. We are based in NYC, and had a trip to Australia / NZ from Europe before going back to NYC, then some West Coast plans, then a trip to Kenya / Seychelles. Realised that a DONE5 would allow us to string them all together. Managed to avoid a lot of YQ/YR fees by plating on QR and avoiding international BA/IB/AA flight numbers as much as possible (but still had to for various reasons see below)

Route ended up being: OSL - xDOH (QR) - MEL (QR) - CNS (QF) - SYD (QF) - AKL (QF) - JFK (QF) - LAX (AA) - ANC (AS) - ORD (AS) - xLHR (AY on BA) - NBO (BA); SEZ (QR)- xDOH (QR) - LHR (QR) - TOS (BA).
Price ended up being around 8k USD pp IIRC (proactively changed flights to avoid DOH on the way to NBO which bumped up the YQ/YR because of the BA flight LHR-NBO, the total hotel / safari no-show fees in Kenya are an uninsurable 20k, so not taking any risks getting there on QR.)
Plating on AA etc. was around 9k USD. Fully aware other optimisations available, but priority was securing trips in Business to places we wanted to visit, not just minimising the YQ/YR fees.

Learned that sadly even AA are now rejecting the multiple stopovers inside North America, so couldn't stopover in JFK multiple times despite several HUCA attempts etc.
Bizarre new internal rule...
QR are also still learning the DONE rules for sure... lots of fun with them discovering which state Chicago is in (hint: not West Coast or East Coast ones)

Decent Tier Points for anyone still crediting to BA due to the QR/AY segments. Could have optimised for more Tier Points ofc (more AY / QR / JL flights), but not the priority.