The retrieval process starts before 60 minutes is up but has not completed until after that limit has been reached, hence partial results.
I’d question why they are trying to bring that many rows back rather than using aggregates. What does the report do, that necessitates it returning 1.1 million rows?
Good point. It’s started to retrieve it in two minutes - how long does it take to return all the results? I’d imagine the Webi Server is getting heavily loaded if it’s a report with lots of calculations, which are probably needed if you’re returning that many rows.