mppt vs pwm

CA Traveler wrote:

Bedlam wrote:
If all four panels were in connected in parallel, it would give me 544w @ 24VDC (just under 23A). Running this one feed to the inputs of three 20A controllers should balance out between the controllers. Am I missing something in this type of setup?

My understanding is that parallel controllers are connected on the controller outputs only to the battery and not on the panel inputs.

So is it not possible to use multiple smaller controllers off one large power feed as long as the voltage is within the controller range and the sum of the controller capacity is greater than the feed? I'm asking these questions prior to making a purchase and not trying to get something to work that I already have on hand. I assumed that running parallel controller inputs would be like running parallel loads off one source.