I would imagine they will need to start crate training both pretty soon, but from what I was told it seems like Aung Bo will probably be on his way out before Anjan, as he move will start being organised quite soon after Sundara is confirmed as pregnant with their next calf (as I said above). I'm not sure whether Anjan will even have left by the time Sundara and Aung Bo's next calf is born (I might be surprised if he's not, he's 5 next month so would be at least almost 7) but it didn't seem like his eventual move was as far along talked about and considered as his fathers, I think it's more of a let's see how things go situation with Anjan in the Hi-Way herd, but I could be wrong. However, it could still take longer for a home to be found for Anjan than Aung Bo, so he could leave Chester first anyway.