Why can't I book LAN operated LA 801 SCL-AKL (5 OCT)? The only option the online planner gives me is QF322. The taxes on this are over $300 higher! Any suggestions on how to get round this?

Similarly I notice that quite often the AA codeshare doesn't show up although I can see it on ITA Matrix. I am considering paying for a Platinum Challenge (the route totals 40k miles so should be worth it) but as the early flights are on SJ and LAN I am missing out on a lot of mileage. Will the AA agent be able to choose the AA numbered alternative flights instead?

My revised trip is as follows. I am avoiding the US to keep it to 4 continents. I have revised it significantly to make use of low cost carriers (AirAsia for eg) rather than burn one of the RTW segments. My taxes come to $1400 (two biggies - BA to London and SCL-AKL above).

Any final improvements welcomed. I am hoping to book this evening.
Thanks for all the help.
Joe

Cabin Class : BUSINESS

Number of Continents 4
Number of Segments: 16
Number of Stopovers : 12
Routing: KRT-AMM-LHR-LIM--LIM-IPC-SCL-AKL-SYD-DRW-PER-SIN-NRT-PEK-HKG-HEL-DXB


Sector 1
From/To: KRT - AMM
Stops: 0
Depart Date: 09/09/2012
Arrive Date: 09/09/2012
Flight No: RJ 511 (operated by Royal Jordanian)
Depart Time: 05:25
Arrive Time: 08:15
Booking Class: D

Sector 2
From/To: AMM - LON
Stops: 0
Depart Date: 09/11/2012
Arrive Date: 09/11/2012
Flight No: RJ 111 (operated by Royal Jordanian)
Depart Time: 11:50
Arrive Time: 15:25
Booking Class: D

Sector 3
From/To: LON - RIO
Stops: 0
Depart Date: 09/12/2012
Arrive Date: 09/12/2012
Flight No: BA 249 (operated by British Airways)
Depart Time: 13:15
Arrive Time: 20:55
Booking Class: D

Sector4
Other means or transportation chosen for this leg of your itinerary From/To: RIO, BR - LIM, PE


Sector 5
From/To: LIM - IPC
Stops: 0
Depart Date: 09/30/2012
Arrive Date: 09/30/2012
Flight No: LA 848 (operated by LAN Airlines)
Depart Time: 01:20
Arrive Time: 06:55
Booking Class: D

Sector 6
From/To: IPC - SCL
Stops: 0
Depart Date: 10/03/2012
Arrive Date: 10/03/2012
Flight No: LA 848 (operated by LAN Airlines)
Depart Time: 07:55
Arrive Time: 14:40
Booking Class: D

Sector 7
From/To: SCL - AKL
Stops: 0
Depart Date: 10/05/2012
Arrive Date: 10/07/2012
Flight No: QF 322 * (Qantas operated by LAN Airlines)
Depart Time: 23:25
Arrive Time: 04:35
Booking Class: D

Sector 8
From/To: AKL - SYD
Stops: 0
Depart Date: 10/12/2012
Arrive Date: 10/12/2012
Flight No: LA 801 (operated by LAN Airlines)
Depart Time: 06:05
Arrive Time: 07:45
Booking Class: D

Sector 9
From/To: SYD - DRW
Stops: 0
Depart Date: 10/19/2012
Arrive Date: 10/19/2012
Flight No: QF 842 (operated by Qantas)
Depart Time: 11:25
Arrive Time: 14:35
Booking Class: D

Sector 10
From/To: DRW - PER
Stops: 0
Depart Date: 10/26/2012
Arrive Date: 10/26/2012
Flight No: QF 793 (operated by Qantas)
Depart Time: 14:20
Arrive Time: 16:50
Booking Class: D

Sector 11
From/To: PER - SIN
Stops: 0
Depart Date: 11/02/2012
Arrive Date: 11/02/2012
Flight No: QF 77 (operated by Qantas)
Depart Time: 12:20
Arrive Time: 17:40
Booking Class: D

Sector 12
From/To: SIN - TYO
Stops: 0
Depart Date: 01/10/2013
Arrive Date: 01/10/2013
Flight No: JL 710 (operated by JAL)
Depart Time: 01:55
Arrive Time: 09:40
Booking Class: D

Sector 13
From/To: TYO - BJS
Stops: 0
Depart Date: 01/12/2013
Arrive Date: 01/12/2013
Flight No: JL 863 (operated by JAL)
Depart Time: 10:35
Arrive Time: 14:00
Booking Class: D

Sector 14
From/To: BJS - HKG
Stops: 0
Depart Date: 01/23/2013
Arrive Date: 01/23/2013
Flight No: CX 391 (operated by Cathay Pacific Airways)
Depart Time: 13:30
Arrive Time: 17:10
Booking Class: D

Sector 15
From/To: HKG - HEL
Stops: 0
Depart Date: 01/31/2013
Arrive Date: 01/31/2013
Flight No: AY 70 (operated by Finnair)
Depart Time: 01:20
Arrive Time: 06:20
Booking Class: D

Sector 16
From/To: HEL - DXB
Stops: 0
Depart Date: 01/31/2013
Arrive Date: 01/31/2013
Flight No: AY 965 (operated by Finnair)
Depart Time: 09:45
Arrive Time: 18:00
Booking Class: D