Originally Posted by
thebigben
Seat selection opens at T-48h, by the way, that may be useful to you

Just change your booking at 9pm two days before.
Sorry, this must be me being slow, but if a non-status passenger is booked DUB-LHR-JNB, ie on a long-haul fare, why would they get seat selection at T-48h? I agree that when OLCI opens for DUB-LHR at 1550 the day before travel, the passenger should be able to select seats for both DUB-LHR and LHR-JNB because of the (relatively short) connection through-check, but what would give them free seat selection earlier than that?
Originally Posted by
The _Banking_Scot
You may need to check in for the dub lhr flight first then go back and check in for the jnb flight as I sometimes found ba. Com does not let both flights being checked in at the same time on the first attempt.
This is true, but I would suggest first trying to OLCI for both flights at the same time. The reason is that sometimes, if you check-in for the first flight alone at T-24h, you cannot immediately go back to check-in for the second flight because that is still more than 24 hours ahead. I see this more often when there's a long (but still <24h) connection between the two flights (hence the use of the words "relatively short" above), so it may not happen to the OP, but I think it would still be better to try to check-in for both flights at the same time, and only go to do them one-by-one if that fails.