I caught it! Comet NEOWISE shows up in the last five seconds! Pretty dim but it’s just above and right of center as the clouds part.
I tried out the time lapse function on my camera last night. The video is limited to 15 minutes (real-time) at 900 frames at the highest frame rate (one frame per second). The fireworks went on for…16 minutes. Hence, the second video below with just the finale. The jump at the beginning is because my initial estimate for where the fireworks would be in the sky was off. When I shifted the camera I also ended up tilting it a bit, too, and I had no way to know until it was over. All in all a successful experiment.