Originally Posted by
bryanoneil
I've got a (tight) connection from T4 to T5 coming up and I'm considering between clearing customs to have a cig landside, asking the staff nicely to allow me into T4 for a cig (but this means clearing security twice - in both T4 and T5) or just proceeding to T5 and trying to survive.
It's very unlikely that you would be allowed back into T4 for this purpose, so don't set your heart on it. Also, if the connection is tight, you would need more than one cig to get over the stress you would create for yourself by doing this.