possible to coop online or not?

so i thinking bout buying an nes and a crt recently and was wondering if a run with black and white one can be verified

The current CR is 4:57.843 by a speedrunner called happyzombie (more commonly known as ogkkkejbd) I attend to break it but my sum of best is a sub 5 and never put it in a real time attack I want to know some tricks to get a CR

I know that LeKukie and niftski got themselves a tas tie 8-4,but i'v tried a lot of ways trying to get a dfa but failed can any body tell me how to do it?