I was actually thinking a combination of Asari and Prothean from Mass Effect, but I guess it is the same sort of thing as the Vulcan mind meld. It's probably what inspired the idea in the first place.

As for how elves would go about making physical contact, I'd say it'd be more like how the gelflings do it in the Dark Crystal. Just holding hands, sometimes in a circle if more than 2 people are involved. At least, that's how it would normally go, I think. No hard and fast rules about it, just like irl. Sometimes we shake hands, sometimes it's a fist bump, or even touching elbows ever since covid hit. Whatever works.