HD Uncensored Video of Ahmaud Arbery Shooting with Backup 911 Call STEREO

Listen with headphones. Left ear is the alleged William Bryan video recording. Right ear is a BACKUP of the 911 call provided by Glynn County via a FOIA request.
Was this 911 call edited? The 911 backup call that appears to have edited audio as well as multiple gunshots not audible in the William Bryan video recording.
Do you hear the audio edits? How is Greg McMichael able to speak calmly saying 'Hello" while his son is shooting someone and he apparently puts the phone down to grab his pistol.