Thanks to you both! I For now I just did the pass-thru PPPoE untagged from a lan port on the working Bell box. I get a fresh public IP on my router and full speed (it's just a 500/500.... I was forced to get to have residential TV....business TV not ...
Did you ever get this figured out? It's amazingly interesting to think you can get multiple public IPs on a circuit. I have a static on my business circuit so that wouldn't ever work, but just got a res line for TV which is not available in the same...