Second, while being questioned by Prosecutor Eldridge, McMillian was asked how Floyd appeared to him while being restrained, with Chauvin’s knee on Floyd’s neck. I expect Eldridge was hoping for a reply along the lines of “he looked like he was being killed.”
Instead, what Eldridge got was McMillian stating that Floyd had foam running out of his mouth. A perhaps stunned Eldridge responded with, “Foam in his mouth?” and McMillian immediately affirmed, “Yes, foam in and out of his mouth.”
Foaming in the lungs, and by extension out the mouth, is, of course, a notable indication of pathological fentanyl overdose. This would obviously reinforce the likely defense narrative that Floyd was killed not by Chauvin’s knee but by the three-fold fatal dose of meth/fentanyl speedball drug cocktail he rapidly ingested to avoid its discovery by the police.
That was about all the substantive value contained in McMillians’ testimony on direct.
With a trial that will likely last as long as this one, you look for one or two tidbits per day that might stand out. The prosecution continued it's case by interviewing more of the people on the scene. Probably the two most notable was the clerk who assisted Floyd when he passed the counterfeit $20.00 bill and the elderly McMillian who told the court that he had stopped to "snoop" at what was going on.
The clerk suggested multiple times (and even ended his testimony) making a point of saying that Floyd was high. Not so high that he couldn't communicate that he wanted to buy cigarettes, but high enough that he it drove the cashier to eventually call the police.
The older man broke down crying on the stand. Not sure that this helps either side, other than it makes him appear overly emotional. But as noted in the text I pasted, McMillian seemed to surprise the prosecutors by making a point of saying Floyd had foam coming in and out of his mouth. This is a point that will likely be hammered by the Defense when their time comes. Foaming of the mouth is a very strong indicator of drug overdoses, seizures, or rabies. Of the three, quite obviously the opioid overdose seems most likely given the evidence on hand.
The other officers on the scene are also seen and heard on video referring to the fact Floyd was foaming, even before he was place in the knee to the neck restraint. So it's likely that Floyd's reaction to the three times the lethal dosage of Fentanyl was happening prior to any actions by Officer Chauvin.