Zachariah scoffs. "You're wasting all of our time, Mr. Winchester. Our schedule isn't wide open just for anyone to disrespect this family and..."

Castiel interrupts him. He will regret it later, but for now, he offers Sam his hand - to shake, not to scent. Like equals. Like an omega and alpha who are not prospective marriage partners, but potential friends. No sex, no attraction, not marriage in question. It's insane because Sam is one of his official suitors - but he likes what Sam has to say, likes that Sam sees him as a person and not just a breeding option. "I look forward to getting to know you, Sam Winchester."