This is similar to Calchas' recent query about the China 72h rule, but this concerns TWOV in India.

Will BA accept me on a flight to DEL without an Indian visa if I explain that I intend to transit airside to an onward flight to KTM, either:

(a) on the same PNR? or
(b) on a different PNR going HBO?

I'm a UK national. Any recent experience much appreciated, thanks.