Originally Posted by
AntonS
Since you got single ticket, Airlink and DL do have interline agreement and your baggage will be checked through. In other words its not possible to have single ticket and not to have your luggage transferred (with few exceptions like INTL-INTL connections in USA etc where you have to clear through customs, but your bags are still tagged all the way). The bag allowance and fees will be determined by DL ticket / DL status.
Airlink is a good airline, do not worry and enjoy your trip to SA.
Just to point out airlines can have ticket interline, but not baggage. They're separate things.
It was pre CV19, but AF/VA (Australia) had eticket interline, but not bags. You could show up to SYD to checkin, get BP but not have bags tagged all the way. (What was even weirder, KLM did have bag interline)
I had booked an award using Skymiles SYD-JNB. (SYD-BNE-TPE-CDG-JNB) I got all BP, but agent could only tag bags to TPE. Luckily CI was as usual very helpful. They retagged upon me asking at BNE. (I had longer connection at BNE than at TPE, so made more sense to ask there)