Time
The fact that Kayden was only chasing his goal without caring about anything else, was it considered being lost? For most, it would be. He was throwing his entire life away in pursuit of a final goal that wouldn't even reward him with anything.
"I didn't get lost, in fact, I found myself during this time, that's all." The two remained silent for a few seconds; it was a long time they had spent apart, and they didn't even know each other well anymore.
"I see, do you want some help in this place?" Kayden just shook his head.
"No need, thank you." Han gave Kayden a nod and disappeared from the place. In the end, the two no longer had any connection; their relationship had died over time.