I flew on AB on the ZRH-TXL and TXL-ZRH flight. The first one was delayed around 1 1/2 hrs and the return had a 1 hour delay.
The TXL-ZRH was delayed because of a late incoming aircraft from BUD. But the ZRH-TXL morning flight arrives the evening before and has a night stop in ZRH.
I'm quite surprised to have on both AB flights delays. Does Air Berlin have a lot of delays and how is their ontime statistic?