GET /past_meetings/{meetingId}/participants - Data Completeness and Retry Logic Questions

We are integrating with the Zoom Meetings API to retrieve participant data from past meetings.

According to the API documentation (Meetings APIs - API - Zoom Developer Docs): "For meetings with hundreds of participants, attendance data may take time to be generated. If participant durations are returned as 0, the request may have been made before processing completed. Wait briefly and retry."

We need clarification on the following points to implement proper error handling and retry logic:

1. Is it guaranteed that the endpoint will return ALL participants in the meeting with their own meeting information (join/leave time, email, status, etc.), even if their duration is 0?

2. How often should we retry requests to get complete data? What is the recommended wait duration between retry attempts?

3. Does this endpoint return external participants for Personal Audio Conference (PAC)?