He didn'tttt from wht we saw and can interpret he didn't, it's just him twisting his memories and blaming himself as of right now, which why he's under sm guilt
I think heks having delusions that he did from the guilt. I think he coul’ve pulled him out pf the way but didn’t because of all the pent-up resentment, and his subconscious is interpreting it as him having killed him
Bro the PH is just rage bait at this point