Originally Posted by
asterix881
Actually, if after coming in from the U.S. to connect to a European flight you exit landside for some fresh air, does that void your boarding pass for the second flight?
If you have a different BP (which is usually the case) for the connection there is nothing stopping you going landside for some fresh air. Infact, I do this quite often because it is generally quicker to connect by going landside and then head back airside via South security, rather than the horrendous shambles that is Flight Connections.
Originally Posted by
asterix881
Or would the only BP be voided if you went through the T5 connection security/went to lounge/ then exited?
Correct AFAIK.