I watched Rand Paul's filibuster, Cruz and Rubio were trying to help, I am certain if Paul could have yielded the floor to either he would have, so I think you are right, sadly. Wiki must be either wrong or harry changed the rules.
I was watching McCain speak a few years ago. That idiot Freshman Senator from Minnesota, who’s name escapes me (Thank Goodness), was presiding over the Senate that day.
I think actually it was Lieberman who was speaking at the time, McCain spoke later in criticism.
Anyway, Lieberman asked, “Mr. President, can I have an additional 2 minutes to finish what I’d like to say?”
The idiot said, “no”....
So I am quite sure if Paul had said, “Mr. President I would like to yield to Senator Cruz.” Reid of whoever presiding would simply say, “no.”