At 1pm in Aug 27th, a dining couple witnesses BL "aggressively" arguing with restaurant staff in Jackson Hole. He storms in and out four times, then GP comes in and apologies for his behavior.
Approximately 4 1/2 hours later that same couple passes BL and GP 2012 Ford Transit van just north of Jackson Hole. U'm thinking approximately between 5-5:30.
Vloggers drive by GP's van at around 6pm, parked very near Spread Creek, the spot where GP is later found dead.
GP's Mom also gets that strange text supposedly from G about her grandpa, "Stan" on the 27th.
According to witnesses then (I'm sure LE has talked to that restaurant's staff) BL was in a very agitated mood causing a "full bliwn incident" and GP was on clean-up apologizing.
I'm just surmising now but I'm thinking her going back in to apologize probably didn't sit well and could have lead to more arguing.
No wonder when TikTok gal and her boyfriend gave BL a ride on Aug 29th he "freaked out" when they said they were going to Jackson Hole. Last time he was there he'd made a big agressive scene and probably killed GP that night. AJMO
Brian Laundrie acted 'aggressive' before Gabby Petito's death: witness