there will be no interference from either remote control .....once set up they use unique codes between receiver and transmitter , whats more you can "mate" any number of receivers to work with either of the transmitters so in theory you can fire 100 fireworks with 1 button push sould the need ever arise, and any reciever will work wirh any remote so you dont have to keep all the kits in sperate boxes
I want to see that, 100 fireworks, heck 100 tiny barrages all at once. Would be like WW3 but more fun.