I want to apologize, first I did not look at your profile, not realizing you were new here or this being your first post, I would have went into more detail. Welcome to beemaster. I do not want to discourage you from trying to remove the bees from the chimney. I remember how excited I was last year when I did my first removal! But back to the video, I watched a video by JP the beeman where he did a trap out on a chimney. As I recall he was successful. I will try and find the video for you and post it here for you.
Phillip
OK here it is. Wishing you all the luck!
PS, There may be a better way but if it is, I do not know it, (from a chimney).
https://youtu.be/VBUPkZS3d8w