However, Delta does sell on Garuda flights. You can book Delta Seattle/Jakarta and the second leg is operated by Garuda.
I meant in the context of
codeshares, since there is no
interline restrictions under FAA IASA.
E.g., the Delta leg from the US to Haneda are codeshared with Garuda. E.g., DL636 is also sold as GA9506.
But the Garuda legs are not sold as Delta codeshares, so the second leg from Haneda to Jakarta will not have a DL flight number.