I personally don’t remember discussing that here. Maybe you’re thinking of another thread?
One thing I’m considering in the TLJ novel is to have that be entirely the dyad, no mind linking.
I personally like the idea that their dyad started in the interrogation scene (although it would be left up to the reader to decide when it begins). Snoke knows about it and as a result makes Kylo conflicted enough for Rey to come to him.