It wasn’t nearly that long.
I think that Ezra helped train with Luke but died when Kylo brought the temple down. When Sabine heard of this she took Ezra's lightsaber and attacked Kylo and easily overpowered him and is about to kill him when Phasma shoots her from behind. This is probably why we don't see them in the new trilogy.
I personally support this but I feel like if Sabine and Sara were in such a relationship then there should be a episode where they kissed like the one with kanan and hera. They should also express more feelings for eachother . Ezra was young but so was sabine. I think that if Ezra and Sabine expressed more feelings then the relationship would thrive. But we already have proof that they might. In the first episode Sabine gave Ezra a chance for taking the crate. she gave him a bunch of chances after that. She also has spent some time with him. I think that this is a theory that could already happen.
I know this is completely unrelated but how do you think an armless Inquisitor would fight