Widex and Bluetooth Devices Sennheiser BT100

I’m looking to avoid headphones in situations where I would normally use them (not watching TV). I have tv play and although it can be used for things other than tv, it’s not good so I gave up on it, and the streaming from iphone is also not good. I was hoping Sennheiser, which is an OK audio brand, would be better. I am wondering why Widex limits the ability to pair (or how they do that) when Phonak apparently does not. It’s disappointing