After waiting patiently until pretty much last minute to finally book an award ticket with Lufthansa in first class, I was ultimately left disappointed by the fact that all LH F routes (at least to the east, but also most if not all of the westbound flights) for this weekend got sold out during the past few days (lately tickets rarely become available 24h or 48h ahead, in fact I saw some availability for just one of the routes about 1 week before the flight, but I couldn't wait until the middle of the week to start my short vacation). So I had to blow my miles wallet and book a Thai first class award from London to Bangkok, adding during the same booking a LH business class award from Frankfurt to London (200.000 miles and something like 715€ in surcharges for 2 tickets). Now the funny thing is, that this itinerary was listed as (the only available) "business" class award on Aegean's website and the actual bummer was that right after my booking the very same "business" class ticket started appearing as an actual business class ticket (all the way), which would have meant that I would have to pay 90.000 less miles and about 100€ less surcharges, having to trade of course F for C for the long-haul segment. But I had already gotten so excited about flying F that I just couldn't change it, even though the difference in total cost would have been gigantic.
My goal was LH F, with FCT for 150k (again, two tickets), I now have a somewhat "uninteresting" LH C, no "lounge highlight" despite a F ticket at either airport and a very, very nice F product from Thai, but sadly on a schedule that will leave me jetlagged (arrival at 6am while body clock at midnight). But like I said, it was one of those "I have to take this at least once" things.

Now the thing I need help with is booking the return ticket. I have planned to stay in Singapore during the last days of my trip and this brings up a whole new "Aegean issue": Even though on my desired dates there are plenty of available seats from SIN to Bangkok and from Bangkok to Frankfurt, the website but also the phone agents will only allow me to book the very first such available connection, which departs from SIN at 7am (which is 100% pointless, because I would be losing an entire day!). The TG408 flight and the TG920 can both be booked separately (same goes for a Singapore flight that leaves 2h15min before TG408) , only exceed the duration of the last combination available online by about 1h (18h total travel time and the "list" stops at 17h) and even though phone agents can see both flights as a combination, they told me it was not available (which is rubbish, because I have already seen the aforementioned combination being available online on days with less connections available with a shorter travel time than the 408/920 Combi, so the said itinerary then "makes it" on the online list). Does anyone have any remarks regarding this issue? I have had this issue before, but back then the flights I wanted to combine had a 12h layover, so I thought ok, maybe I shouldn't get too "greedy", (though the rules allow for as long a layover as 24h!), but if now even 4h layovers get excluded (not as a general rule of course, just for the specific routing) this seriously limits the flexibility of award tickets (which with Aegean is already quite limited as it is).
PS. I will be connecting at BKK on a flight, again with Thai, to Denpasar. Does anyone know if arriving F passengers, connecting on a C international flight get any "special treatment" at BKK? I have been trying to reach Thai, but they are not answering their phones here!