.”…I have heard that the reason for holding hands after the chuppa is to be mamshech the kinyan from Chupa to the Yichud room. “
“… a couple should hold hands from chupah to yichud room to minimize the hefsek.”
The first quote here noted that he does not know of a source. The second quote was from the “many have heard” variety.
I would like to be enlightened as to what halachic hemshech or hefsek we are concerned with, and how exactly does holding hands alleviate this problem. Whoever answers, please make it credible and documented. If not, I and many others have more than a few kushyot to ask.