How about the merge?
on a/c where there are two lines of people deplaning and they meet up at the cabin door.
usually, i travel alone. however, it seems that people traveling together have to stay together and will not let you go between them. instead of letting everyone other person off the a/c, they seem to get stuck together and do not make room to let people between them. and of course, they have to walk up the jetway side-by-side so no one can pass.
sometimes it can be annoying, especially when they do not seem to be in a rush now that they are off the a/c.
or is it just me?