Had a bull go after my buddy in the same situation.
We were across a drainage covering the whole area for the set.
Started elk in distress for coyotes.
Had a pissed off moocow bull come in foaming and groaning.
He turned on my buddy. We were using bows, I just remember going "**** I wonder how fast a slick trick would kill this thing if it steps towards him more."
Luckily my buddy thought fast and switched the call to lion screams. It scared the hell out of the bull. It bailed.
I never trust moocows after that. They're the equivalent of a bear that's too accustom of people in my mind.
They get complacent with us, as we do with them. Then bad shit happens.
Complacency breeds contempt.
I had some run ins with a moocow bull the last two years bear hunting.
Had to climb on a boulder once and wait for it to leave.
And another drainage near me actually has a giant feral cow population from reservation cattle that got away over the years.
Almost all of the bulls are sketchy. They'll usually give you a wide berth, but they stand their ground hard.
Government is trying to eradicate them humanely... I don't see that happening. Someone will get gored eventually and it'll change perspectives.