I think they've intentionally hidden a lot of the fight, not for the gore of violence but because its what Claudia didn't see and her bias towards Louis sees him as the pure victim of the fight. When they're in the bedroom Lestat tells Louis he doesn't want to fight like this and that he's restraining himself then it goes quiet. Louis talks to Claudia and says its all over but then it suddenly escalates and gets much worse. We didn't see/hear something on purpose and I think Louis will either keep that hidden or reveal it in episode 6.
Let us not forget they've been physically violent since the beginning. Louis stabs Lestat in the back three times in the church, Lestat throws him across the room. Louis throws Lestat against the wall in episode 2 before going outside. The fight was brutal but vampires are brutal. Lestat punched through a priest's head in episode 1, if a random human was in Louis' place no one would have flinched.
They do physically fight in the book and even in the movie, not to that level but still. That is the pov of a 14 year old vampire seeing her father get into a fight with a man she calls her uncle but hates. The narrative is biased just like the first book is and I love that. Hopefully we get Louis' thoughts in the next episode.
