@jongarrison you have another example on nodebb-plugin-custom-header. But in this case is managed by a plugin too. I don't know if it is possible to applu different theme (tpl). You could also managed it in the same tpl with a little bit of logic in it based in certain configuration server side.
@BuZz 1 is the correct answer,as the number of replies includes the first post in the topic which isn't technically a reply, which I think adds to the confusion.
Also with the reversed logic from the 2 settings before (which are how many seconds someone is allowed to do something, rather than how many until they are disallowed)