Denethor's dislike of Gandalf

[Ainaserkewen]

Maybe Denethor saw Gandalf as a rival.

I always thought of the animosity between the two old men to be very similar to the reasons of Saruman's fall from grace. I've always thought that Denethor was jealous of Gandalf, outrightly. It's evident in the way he treats the old wizard and the way he's always trying to overrule him. Similar of course to how Saruman felt about him. And they both had the palantirs as well. I feel there is an important connection between Saruman and Denethor, at least Character-wise.