Well, this might be true. I sort of doubt it, but leave open the possibility it's true.
After all, politicians make strange bedfellows.
One recalls that when Barry Goldwater (R-Arizona) and John Kennedy (D-Massachusetts) were in the U.S. Senate together (1953-1961, they were social and personal close friends, although Goldwater secretly considered Kennedy an intellectual lightweight. They were really good friends.
On the flip side of the coin, the ideological moonbat clones John Glenn (D-Ohio) and Howard Metzenbaum (D-Ohio) during the late 1970s into the mid-1990s Hated, despised, detested, loathed, each other.
I don't think the worthier Democrat candidate and the presumptuous Democrat candidate are buddy-buddy like Goldwater-Kennedy, but one suspects their relationship, social, personal, and working, is better than that between Glenn and Metzenbaum.