I've never seen this before and wondered if anyone else has experienced this:

I was on a ANA flight from Sapporo to Haneda the other week which arrived at around 9 pm. I deplaned through the left forward door. Once in the terminal I had to walk past the nose of the airplane and noticed that they had passenger bridges connected to both sides of the airplane, which looked quite funny. And the second bridge was actually being used to deplane passengers!

If I remember correctly this was on a 747, which was pretty full.

HTB.