Could you describe how it would be different? Does not a senior student feel light/divine love in the presence of someone who has attained Rigpa? (Divine love "feels" more like a combination of "peace" and "joy" than what we normally describe as romantic love.)
No. Not at all. There is no "vibration" that you will feel emanating from someone who has genuine knowledge of the state of Dzogchen.
I suggest you read Dzogchen: The Self-Perfected State by Chogyal Namkhai Norbu, and become a little more educated about this subject.
I cannot educate you from the ground up. However, I can supply you with a couple of citations:When a master teaches Dzogchen, he or she is trying to transmit a state of knowledge. The aim of the master is to awaken the student, opening that individual's consciousness to the primordial state. The master will not say, "Follow my rules and obey my precepts!" He will say, "Open your inner eye and observe yourself. Stop seeking an external lamp to enlighten you from outside, but light your own inner lamp. Thus the teachings will come to live in you, and you in the teachings."
Chogyal Namkhai Norbu. Dzogchen: The Self-Perfected State (Kindle Locations 179-182). Kindle Edition. Ordinary beings are reborn without choice, conditioned by their karma into taking a body according to the causes they have accumulated over countless past lives. A totally realized being, on the other hand, is free from the cycle of conditioned cause and effect. But such a being may manifest a body through which others can have the possibility of being helped. The Body of Light, or the Light Body of a being who has realized the Great Transfer, are both phenomena which can be actively maintained so that those having the visionary clarity necessary for perceiving them can communicate with the fully realized individuals whose bodies find themselves in a dimension of pure light.
Chogyal Namkhai Norbu. The Crystal and the Way of Light: Sutra, Tantra and Dzogchen (pp. 162-163). Kindle Edition.