The walk back seemed to take much longer than when they were leaving, but eventually, they reached a point where Delano saw that they were finally getting close. "Muroki, look!" He said, grinning and pointing with a paw. "We're almost back!"
With the revelation that they were close, he had forgotten all his doubts, and they were instead replaced with an intense eagerness to quickly finish that last bit of walking and get it over with. And get started with their lives again.