Like cats on a barbecue pit - they never stop dancing and squalling long enough to make a cogent point.
Trying to carry on a cogent discussion them is like trying to play Hit The Mole. When they don't know the theology they attempt to argue the science. When they don't know they science they attempt to argue the theology. When it is established that they know neither they argue ad hominem. When that doesn't work they introduce another bizarre piece of theological or scientific conjecture upon which to repeat the cycle.