Connecting Rave Mini with Flare 2

Hey guys hope y’all having a great day,
I recently bought Flare 2 from Amazon because it was on sale :). I had already have a Rave Mini, I wanted to pair them via PartyCast but realized mine wasn’t a Rave “PartyCast” but “Mini”. I thought they are the same thing. I tried pairing both with TWS (didn’t work), researched online, looked up for some videos but couldn’t seem to find what I specifically want. Can someone support me about this issue that I can enjoy my great speakers together? Thanks in advance.
Best Regards…