Rather than the OP continuing to get angry at people who give answers he doesn't like, or posters casting aspersions on the OP's intentions or his wisdom in booking a 35 minute connection on the last UA flight of the day if he absolutely must get to Vancouver that night and (must fly out of BUR in lieu of the 3 different evening nonstops out of LAX), perhaps we can agree that the answer to whether you will get put on the AC flight is "Maybe," and there is nothing "insulting to anyone's intelligence" about this.