How did this work out in the end?!

I am looking at AUH-MUC (or FRA)-TLS return in business. It is nearly 20% cheaper booking through LH than through EY.

I'm not too fussed about the baggage allowance, though I would appreciate some clarity. I am pretty curious about the miles and the chauffeur. Etihad Guest Miles would be my preference.

I live 10 minutes from AUH so the chauffeur is not worth very much to me. I can't imagine it is worth paying an extra 20%...