I have a upcoming flight BOM - FRA in Lufthansa economy connecting to FRA - EWR in United Polaris. The itinerary has been booked on United (premier silver status). Since I am traveling for the first time on mixed cabin, had a few questions:
1)should I check in at business or economy class LH counter at BOM ?
2) will I get lounge access in BOM ?
2) what would be the baggage allowance? The email receipt from United mentions 2 bags at 70lbs(32kgs). But I am not sure if LH would enforce that.
thoughts?

thank you