Yups... that’s correct LH & AI code share too. I forgot about that.
Funnily enough... if I’m booking from the AI site I can book AI+LH flights. But from the LH site it is LH+9W and LH+UK!
But OP of course is stuck because the only option available to do BOM-MAA is 9W from BOM on a LH ticket.
If there’s a IIROP would 9W put them on another airlines or say it’s LH’s problem?