I think that must just be coincidence. Edge fails about as much as Brave for me at the moment.
I think the DNS thing is probably a red herring also. DNS wouldn't come into play once the hostname is already resolved. It would be cached for a while too. I'm not having DNS failures anyway. I'm having failures where the page doesn't respond and fails to load right after it loaded a moment ago (proving DNS resolution was successful).
I suppose there could be some kind of crazy AJAX stuff on the promotions page that relies on a separate DNS mechanism. That would sure be odd, though I guess stranger things have happened.
