So with the latest Mob Reporter video I was able to clean up the text messages for July 3-4 on the timeline. Some observations:
MM was at Maple Gate
It looks like MS and MM were both at Maple Gate during July 3, overnight to July 4, and throughout the day on July 4. Perhaps we'll hear more details of what happened in that time when MM gets on the stand?
The "heini"
IMO the present that DM left for MS at the top of the stairs was just a pack of beer.
Did MS have a clue what was happening that night (July 3)?
It seems that after picking up LB and bringing her back to Maple Gate, DM went back out again around 7:30pm. MS was still at Maple Gate and suggesting they get some food when DM returned. He had also asked for some change to get food. IMO it doesn't seem like MS is aware of or getting ready for a pending murder mission.
Was MS present for LB's murder?
There's a 5 hour window between when DM tells MS he's "on a mission, back in 1 hour," and when MS later asks, "Where u at?" The window is July 3 at 7:33pm to July 4 at 12:42am. Anything could have happened in that time, but it's difficult to tell whether MS was ever with DM.
Let's say DM returned to Maple Gate around 8:30pm, then "hit the vapes and tripped out for a bit", and then regained his senses around 1:00am. MS, expecting to have heard from DM earlier, was then asking "Where u at?" at 12:42am. So perhaps they never actually met up earlier.
Then, at 2am MS wants to talk to DM but DM says he's going to sleep and they'll talk in the morning. MS doesn't respond until 9am in the morning when he says, "Aight."
Based on all of this, it's not clear whether MS even saw DM in person during the evening of July 3 and through until the morning of July 4. IMO until we hear further evidence, MS could have a good argument to say he wasn't present if/when LB was killed. At this point I haven't heard any evidence to suggest that MS was involved in the planning/deliberation aspect, either.
DM does all the work
DM seems to be doing everything by himself on July 4. He rolled his first spliff, drove to Waterloo and the farm, and eventually returned to Maple Gate in the afternoon. Meanwhile, it seems MS was sleeping the whole time. DM texted MS, "Back before 4pm" and, "Left some dough on the coffee table in the basement," so if MS did return to Oakville that day, it likely wasn't until later in the evening.
Who pulled all-nighters?
At 2am DM told MS he was going to sleep and they'd talk in the morning. So it seems like DM did sleep that night. Or alternatively, he stayed awake but just said that to defer talking to MS until later. In either case, it puts distance between DM and MS for that time period.
If MS didn't get up until 3:20pm then it seems he didn't get much sleep. Was he just getting drunk in the basement with MM? From his 3:21pm text, "How's the spliff?", he seems to understand what that means. This suggests that either he was involved in killing LB, or DM filled him in about it at some point (say, in the morning).