Not forbidden, but I think it prices as two awards. My knowledge of the rules is a little rusty given no bookings since covid… but AA used to (still has) specific routing rules and exceptions for travel between regions. Until the ‘Doha exception’ for example, travel between europe and AU was only allowed via asia 1 or asia 2 as a single award… then they expanded that to allow travel on Qatar via Doha (hence the ‘doha exception’) and also Etihad later.
I don’t believe that had been expanded to include routing via the Indian sub-continent.
(If they have since expanded to include the i sun-continent then you’re probably looking at a married segment issue in your case.)