This is a bar from the fifth of Bernstein's Five Anniversaries, "For Susanna Kyle". It's a nice and easy tune that sounds vaguely like what Satie would have composed in his youth were he not wasted all the time.
I am wondering what I am to do with those tenuto markings. I would assume that I'd have to let the chords "clash" against each other for a bit, but I'm finding it very weird, and also kind of difficult (not impossible) to do without using the pedal, which, however, would apply to the bass line as well - which I don't think I am allowed to do (besides sounding not too good).
I have read and heard that tenuto in context might mean "slight rubato", but it also says (I think) "rit" for "ritmato" (EDIT: no it doesn't, stupid me), which is kind of at odds with the idea of rubato.
So, what am I to do with these?