I'm on a Finnair booking SYD-BKK-HEL-DUS in J with an overnight layover in BKK. I will arrive in BKK at 4.40PM (QF23) and continue to HEL the following morning at 8.55 AM to HEL (AY142). Will they check my luggage all the way through to DUS or will I have to claim it in BKK and check in again next morning? I would prefer to check it all the way through to DUS. Thank you for your advise.