Touch Events touchesCancelled and touchesEnded

Question

I have a project that I started out using a tap gesture recognizer for. I realized I didn't have enough control with the tap gesture recognizer, so I've started coding with using my viewcontroller as a UIGestureRecognizerDelegate. Just to make sure I was on the right track, I added methods for touchesBegan, touchesMoved, touchesEnded, touchesCancelled. The methods are empty except for NSLog calls so I can tell what is being fired when I try different things.

Things worked as expected except that I was getting a bunch of calls to touchesCancelled. I assume this is because of the tap gesture recognizer I still have in place. I'm not ready to remove the tap gesture recognizer, so I just wanted to confirm that this is what would happen if a gesture I used was actually a tap.

The documentation says:

This method is invoked when the Cocoa Touch framework receives a system interruption requiring cancellation of the touch event; for this, it generates a UITouch object with a phase of UITouchPhaseCancel. The interruption is something that might cause the application to be no longer active or the view to be removed from the window When an object receives a touchesCancelled:withEvent: message it should clean up any state information that was established in its touchesBegan:withEvent: implementation.

But I suspect my scenario just outlined is just as likely. Am I correct?