And the chimney sweep left that in there? If I pay money to a “professional” to get a job done I expect it to get done. 100%. Not half arsed. But that’s why I prefer to do things myself. I don’t even trust most “professionals”. My dad was right when he used to tell me, “If you want something done right you have to do it yourself.”
All I can do is offer a modification to the phone down the chimney idea. I attached a phone and led headlamps to my chimney sweep rods. Before sending the phone down I started a video call, FaceTime,...with my kids phone. Then I had a live feed and could turn, stop, move setup around for a better view. The mirror and sunlight down the chimney, when it all lines up is awesome. My fat head looking down the chimney seems to block the sun a lot.