On Reddit iunoionnis explains Aristotle and time
Heidegger's main objection to Aristotle is to his theory of time in the Physics. Heidegger believes that Aristotle understands Being with regard to present-moment presence, and understands time through this interpretation of Being as presence. He thinks that all theories of time since Aristotle (including Augustinian time) have basically followed Aristotle's lead of explaining time on the basis of Being, rather than Being on the basis of time.
However, Heidegger does think that two figures, Aristotle and Kant, do see that time has a deeper, more fundamental meaning than the "leveled" sense of presence, but only drop hints about this.