Please create a very detailed, long-form summary of this meeting.

Write in normal narrative paragraphs, not dialogue.
Go roughly in chronological order, but you can group related points together.
Include all important topics, questions, arguments, examples, and numbers that were discussed.
Whenever it’s clear, mention who raised each major point (name or “Participant 1/2” if you don’t know).
Expand enough that someone who did not attend would get a rich, comprehensive understanding of what was discussed, not just a high-level overview.
It is fine to paraphrase and reorganize the content; do not attempt to reproduce the original transcript, exact wording, or every individual sentence.

At the end, add three short sections:
Decisions
Action items (with owners if mentioned)
Open questions / concerns