[8th Edition] Lizardmen rules question: Mixed units and excess wounds

[Arnizipal]

If the Kroxigors in a mixed Skink Cohort are targeted in close combat, do excess wounds pass on from one Kroxigor to the next or are the wounds lost like when you target a champion outside a challenge? If you inflict more unsaved wounds than the Kroxigors have left, are excess wounds lost?

And a bit of an unrelated question: can the Skinks use the Leadership of the Kroxigors instead of their own for breaktests and pyschology tests?

My gut feeling tells me its "yes" to all three questions but I'd thought I'd check.