With a 6 hour layover I think there is little reason for them to re-route you right now. If you miss your DEL-BKK flight they may put you on TG or the next AI flight. AI has stopped accepting 9W IROPS pax so I doubt they’ll be sending you to 9W.
Schedules and flights movements even with PAK airspace closed should stabilize by next week. So you should be ok.