What? No gap?

After a 600 pip drop in 2 hours (GBP/JPY) on friday, then a retracement part of the way back for the rest of the day, I would have expected to see a big gap for sunday open. There was none. I guess I should be glad since I had open trades friday. I generally try to be completely out of the market before closing on friday, but this time it was impossible. Anyway, I just thought the lack of a gap today was really weird.