Connecting to AI on separate tickets
Arriving on NRT-DEL JL749 on 24 Dec arriving at 18:20 in C and would like to go to Mumbai. I'm debating whether to book the 21:00 flight or 23:10 flight to BOM. Will be flying Y to BOM but have *G. Since both flights are international continuations (21:00 goes on to EWR, 23:10 comes from ICN/HKG), would I board in the international terminal or the domestic one? Do I clear immigration in BOM if I can convince JL to tag to my AI flight?
Later in the trip, arriving on AI in DEL from BOM at 23:15 (also an international continuation; flight continues to JFK but I don't want to). Family members arriving on LX146 at 00:35 of next morning. Is there somewhere I can wait for them? I have PP and there seems to be an arrivals lounge.