This is another trick how to handle loop cross-overs in Ableton Live. What typically happens with pad-like loops is that when the loop starts again, you could hear the transition from the end to the beginning. And Ableton Live, still in version 7.0, does not have cross-over handling.
One technique I’ve used from time to time is to insert a ping-pong delay at the end of such pad loops. Jut when the loop ends, I will increase the wet level with automation. Thus, when the pad ends, you get this filler that feeds into the next round.
You could experiment with reverb as well to get such a fill effect to avoid hearing the obvious loop cross-over points.
Another nice thing with such a delay or reverb is that it sounds very psychedelic, like mind-expanding, here and there! Anyway, this is another reason I prefer mouse-based automation loops, instead of using a controller, you could be far more exact with such settings, not that using a controller will make the production sound somewhat more human.