https://us.community.samsung.com/t5/Galaxy-S24/Galaxy-S24-Ultra-can-t-connect-to-6Ghz-Band-for-Wifi/td-p/2789486
I've been seeing these threads where Samsung devices can't see 6ghz on occasion and frequent disconnects, etc. Perhaps the firmware version gnuton/stock differences were merely a...
Are you using a Samsung device by any chance?
https://www.snbforums.com/threads/samsung-galaxy-s24-ultra-doesnt-detect-6ghz-band-on-wifi-router.88662/
https://us.community.samsung.com/t5/Galaxy-S24/Galaxy-S24-Ultra-eventually-disconnects-from-Wi-Fi-7-network/td-p/2790128