Questions taking something from one tech-level and introducing it into another tech-level, where it is/was non-existent, are on-topic.
Questions about actions that have taken place in a previous tech-level are off-topic.
You have to build an element of a world if a question is supposed to be on-topic. In neither of the questions you linked I can see this element of a new world. As far as I can see the first one is asking about how a medical condition would have been treated in the past and the other one is asking about how long it would have taken to walk a certain distance in the past.
Both seem off-topic and therefore I voted off-topic on both of them.
Both are also about the actions of a character. How long would this person survive? How long would this character take?
Try to make it more general: How long would this unknown disease that was non-existent in this time period be treated according to the history of how people dealt with new diseases? How long would it take an adventuring group of x people to walk into terrain that looks like [sketch]?