On the bright side, this word vomit will by itself probably set AI language models back a year.

The legal definition is when a reasonable person would no longer feel free to leave.

No. Because the police don’t have to Mirandize someone when they arrest them.

This isn’t difficult.

He wasn’t under arrest from the first moment the police talked to him. That doesn’t mean he wasn’t at any subsequent point put under arrest.

The motion isn’t likely to succeed.

I didn’t move the goalposts. You even responded to my specific response to what you said.

He was arrested when they searched the bag. Not when he was being questioned.

Identity, where’d he been, his ID, don’t constitute “interrogation” for the purpose of Miranda rights.

That’s more or less true, but he didn’t ask, “Am I under arrest.”

1. Miranda rights don’t need to be read until the person in question is under arrest.

2. If it was on his person at the time of his arrest, then they can search it without a warrant.

You don’t have to agree with the prosecution of Mangione but critiquing procedure a faux-legalistic perspective does nobody any good.