What is the issue with my YouTube Data API search request?

I am attempting to query the YouTube Data API to find the most recent video posted with "Premier League Update" in the title. I am making the following GET request:

https://www.googleapis.com/youtube/v3/search?part=snippet&maxResults=50&key={{api_key}}&channelId=UCqZQlzSHbVJrwrn5XvzrzcA&order=date&publishedAfter=2024-10-20T12:45:09Z

The request is successful but seems to be leaving out a number of videos for an unknown reason. When I look at this channel on YouTube, it has at least 15 videos that should fit the criteria, yet only returns 11 or 12. It omits the exact video I am trying to find. There does not seem to be any indication as to why a video would be left out of this query. Does anyone know what the issue could be? When I make the request, the oldest video in the result set is OLDER than the one I expected to be there, so the time frame is not an issue.

I expected https://www.youtube.com/watch?v=FaeZnz-_nDI to be in the result set, but it was not.