In this video I show you a good way to combine 2 loop-pedals. It's nearly impossible to use 2 loop-pedals at the same time because they cannot communicate so they will get out of sync after a while. But you can use your 2nd loop-pedal to do a "multiply": Yout record a short loop, e.g. a beat, on your first looper and then play a longer loop, e.g. a chord-progression on top of it. This way you don't have to do the beat over the full length of the long loop.
