To make it crystal clear:

Lets say you have 7 tabs open. Your browser history may include many more websites than were present in those 7 tabs: websites that you skimmed, rejected and immediately closed during your research, or websites you visited while slacking off. The history also doesn't describe how you reached those 7 tabs - it describes everything you have seen. 2 of them could be search results, 5 of them could be pages opened from the search results, and 2 of those 5 could be navigations done without opening new tabs. There may be 20 or so tabs that you opened that are now closed. It is not straightforward at all to manually derive that information from a simple list of sites that you saw. The replay would consist of seeing yourself navigate to that current state (ignoring all the abandoned paths a.k.a. closed tabs) - screenshots with the links you used highlighted as an uninspired example.

Live action replay might have been more appropriate.