I think the main thing is that that a nunh has to have constructed some sort of method by which he will not lose his nunhship while he's away.
Like, a challenge from a tia can come at any time. If he's away when that happens, that could mean he loses his nunhship by way of absence; if the women are so fed up enough of him being away that they accept the former-tia as a new-nunh because it's better than having no one.
Or are there people in the tribe loyal to him for other reasons? Has he taken good care of them during his nunhship? Has he shown qualities that his tribe considers important during his nunhship? If so, the women might reject the tia making the challenge on the basis he's cowardly or weak to make a "real" challenge, allowing the current nunh to keep his title even while he's away.
U'odh Nunh seems respected by his tribe. He does good things for them, he keeps them in balance, he shows wise leadership and carries out their traditions without hesitation. If one of the tias who wanted to become nunh challenged the position while he was away, I think most of the U would scoff and ignore him rather than accept him - because they'd rather wait for U'odh to return than make a gamble on a tia who doesn't even want to stand up in a real fight.
Or that's my take on the situation anyway!
Like, a challenge from a tia can come at any time. If he's away when that happens, that could mean he loses his nunhship by way of absence; if the women are so fed up enough of him being away that they accept the former-tia as a new-nunh because it's better than having no one.
Or are there people in the tribe loyal to him for other reasons? Has he taken good care of them during his nunhship? Has he shown qualities that his tribe considers important during his nunhship? If so, the women might reject the tia making the challenge on the basis he's cowardly or weak to make a "real" challenge, allowing the current nunh to keep his title even while he's away.
U'odh Nunh seems respected by his tribe. He does good things for them, he keeps them in balance, he shows wise leadership and carries out their traditions without hesitation. If one of the tias who wanted to become nunh challenged the position while he was away, I think most of the U would scoff and ignore him rather than accept him - because they'd rather wait for U'odh to return than make a gamble on a tia who doesn't even want to stand up in a real fight.
Or that's my take on the situation anyway!