For anyone who forgot, the time from when Yunn last saw Kaylin to the current time was over 300 years. Yunn is really starting to understand Kaylin’s perspective and how it must feel to be uprooted from not just your life, but your time, and how jarring it can be. On the plus side, for Yunn it makes it really clear that Kaylin didn’t abandon her and her friends, she was taken (effectively).