<< 10:09 Shots inside hotel (had to be guard) >>
That’s the cab driver saying that burst sounds farther away. And it could be simply shooting out the other window which was on a face of the building angled away from the cab driver.
The official police timeline had the security guard confronting the shooter at 10:15 IIRC and getting shot and the cops on the floor within 60 seconds after he was shot, at 10:16.
Listen on headphones. Cab driver video audio in right ear. Video audio in kill zone in left ear. Those text notes in video, two of them, are dead accurate.