3 days for the entire PR (and 2 days from last comment) is not a long period of time, specially if people are traveling or vacation.
Before merging, if it is not a module you developed, then ask again like:
``` If no further comments in 3 days, then I will merge ... ```
This is a generic remark, not saying that this PR should be reverted. But overall, it's not advisable to rush and merge specially on big changes.