Just looked this up. STrom Thurmond filibustered alone for 24 hrs and 18 min in opposition to the civil rights act.
IT’s interesting that Sen. William Proxmire of Wisconsin spoke for 16 hours and 12 minutes to stall debate on an increase of the public debt ceiling in 1981.
Proxmire was concerned about the nation’s rising debt level. The bill he wanted to stall action on authorizing a total debt of $1 trillion.
Proxmire held forth from 11 a.m. on Sept. 28 through 10:26 a.m. the following day. And though his fiery speech earned him widespread attention, his marathon filibuster came back to haunt him.
His detractors in the Senate pointed out taxpayers were paying tens of thousands of dollars to keep the chamber open all night for his speech.
You apparently need 60 votes to end a filibuster. The speaker must speak the entire time, and cannot sit down. I don’t know if he can yield to someone else. I would think that he cannot.
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.