From what I’ve read, you can now use your MAC BLE to connect to a BLE compatible trainer without an ant+ dongle and Zwift mobile connect app via ios.
However, its not clear whether this can be done if your mac only supports BLE 2.1 with older gen. Macs or does that even matter? I have BLE 2.1 on my mac and it wont’ connect to my Cyclops Power Beam Pro BLE version.