Hi,

I’m sure the answer is in this thread, but having read through dozens of pages, I’m still not 100% clear, so thought I’d ask to confirm.

Flying YYZ-FRA on June 21 on AC 872 scheduled to arrive at 6:20am on June 22, connecting to LH 1086 FRA-MRS scheduled to depart at 9:10am. Best guess at this point is arriving non-Schengen B42 or B48, departing A (Schengen).

Is the best connection method to clear passport control and then walk the tunnel from B to A? (i.e. do not take Skyline train)
Do I need to clear transfer security (and if yes where does this happen?) or is there a way to avoid security altogether?
Flying business class both flights - are there any priority lines at passport or security, and what is the best lounge (and should I expect to have enough time to pop in to it?)

Thank you for any assistance and advice!