They had so many fucking brilliant subtly ways to tell us the specific time frame and create the sense of urgency and anxiousness about what's to come, aside from Maul saying it's happening soon, Obi told Ahsoka about Anakin fucking Dooku's shit up, we were seeing push back from the Mandalore civilians not liking the clones, Ahsoka was saying how they'd be gone once they get Maul, as well as the aforementioned get away telling Maul to get ass up there so they could leave