I'm sure this has been asked millions of times, but couldn't find anything specific to LCY...

I'm flying revenue LCY-ZRH on Swiss Economy on one PNR and then a redemption in Business Class on TG from ZRH-BKK on another

Will Swiss at LCY check me all the way through to BKK on priority baggage? I'm *A Gold.

And in the event that LCY-ZRH gets cancelled or delayed, what happens to the connection as it is on a different PNR?

Thanks in advance. I;ve asked around, but there seems to be conflicting thoughts. Anyone had actual experience of this?

Is there some way of merging PNRs?