After having read the article:
https://developers.lseg.com/en/api-catalog/refinitiv-tick-history/refinitiv-tick-history-rth-rest-api/tutorials#rest-api-tutorial-5-on-demand-market-depth-extraction
I am left wondering if it is possible to collect depth of book data historically. I can see, in this article, fields such as "QueryStartDate", but is there a maximum backwards-looking time-window such that this field cannot be used to go back historically more than - say - 3 months?