Hi there,
A rule questions that came up during a discussion with my group, and we couldn't find a clear ruling.
Spirit Link (https://2e.aonprd.com/Spells.aspx?ID=302) says that it ignores the temporary Hit Points of the caster. What happens then, when the caster has temp HP, reaches 0 Hit Points through Spirit Link (and the spell stops there), but still has a pool of temp hp remaining, does he fall unconscious ?
This seems to be the only way to have permanent hit points depleted before temporary hit points, and there doesn't seem to be a clear rule for this case, or we just didn't find it.