Familienoberhauptvogel
Banned
I think the Animus is recreating the events that transpired, but sort of "filling in" the details. So you aren't 100% recreating the kill, and in the actual kill the character was able to have some time to hear the character talk. That's how I always interpreted, probably put more thought into than Ubisoft did, haha.
That's pretty much how they explain it. AC1 and forward were all about recreating the memory sequences to some extent so that they could fill in the blanks.