TR Remote not fully connecting?

[Jiehfeng]

I just bought a TR Wii Remote Plus, the problem is it isn't connecting to Dolphin. What happens is, let's say when you press 1 + 2, the light blinks for around 25 seconds, but when Dolphin is in Continous Scanning mode, what happens is the lights stop blinking within 10 seconds or so and it doesn't connect. Most times as this happens Windows 10 gives me a notification that it is setting up the TR Controller and then it successfully sets it up, but that's it, it doesn't get paired.

Is Bluetooth Passthrough my only option? I haven't tried it yet but I assume it'll work, but the problem is I won't be able to use other bluetooth devices as the drivers for the adapter is libusbK or something. Can I use two bluetooth adapters? One for the Wii and one for other devices? Thanks in advance.

EDIT: I just fixed it! Instead of 1 + 2, I tried the sync button just in case and it worked! Why is that? In the wiki it never mentioned the sync button.
Before I tried this I tried Bluetooth Passthrough but it didn't work (yes I used the sync button and pressed sync in the controllers menu), but with emulated bluetooth pairing, connecting the Wii Remote but with the sync button worked. In any case I'm fine as it now works, but curiously, why?

EDIT 2: Nvm I'm dumb, it says to use the sync button in the wiki.