Kronos was the one who recovered from his broken bones the fastest. His near infinite vitality was a cheat which helped him recuperate very fast, however, the innate skill still took a significant toll on his stamina.
Rocky, having only broken his arm and not his leg, was fine to carry on after a short rest, as although every square inch of his body hurt like hell, he had it in him to push till the end, as long as there were no serious battles ahead.
Buhara and Erin however, were unfit to carry on.
Both of them were in need for some urgent medical attention and Erin especially, having suffered damage to his spine and ribs was not feeling good at all.
If he could, Erin wanted to drink a bottle of painkillers and just drift asleep till his body healed naturally, however, he could not.
The team still had to reach their destination to deliver the package and they could not finish it without him being physically present there as well.