In the chronological timeline of the Star Wars verse, the moment where Anakin runs off to save the Chancellor isn’t his final meeting with Ahsoka. In the final seconds of the episode, we watch him depart the gravesite through the hollowed red-painted helmet of a fallen clone soldier.
Two episodes earlier, the blue saber was Anakin’s final parting gift to Ahsoka. The Clone Wars “Victory and Death” finale ends with the former Anakin Skywalker, now wearing the armor of Darth Vader, exhuming the lightsaber of his former apprentice Ahsoka Tano in the snowy burial grounds of an unidentified moon.