BBM
I'm glad you posted this as I was just in the process of posting something similar. LE has never outright confirmed the timing of the neighbors hearing gunshots.
Please humor me but what if...………
The neighbor did mistakenly look at the clock and it was more along the lines of 12:51 vs 12:31 as others here mentioned. Easy mistake to make especially for someone whose older (eyesight wise) and in bed. She also mentioned her dog altering to something around 1:00 am (the getaway?)
I set my stop watch time for approx. 7 minutes (start of call to officers arriving on scene). Wow that was an eye opener, it was a long time!! I actually went to my front door and imitated the actions, ie confrontation/altercation with JC, DC somewhere behind him dials 911 after first shots drops the phone in front living room area runs with Jayme to bathroom/back bedroom locking them in using the chair as a barricade. Perp breaks in and shoots DC (maybe that's why neighbors didn't hear another shot) grabs Jayme and blazes out of there.
The phone could have been far enough to only hear noise/commotion like "Jayme I love you I can't live without you, I'd rather die" etc. (possible reason suicide dispatch??) Perp sees it/hears 911 operator and disables it on way out. Plenty of time for this to happen.
JMO plus my DH thinks I am way too invested in this. He was my perp in this scenario