How many connections does power bi open up for loading data

We have a simple Power BI reports accessing Oracle db for part of the data.  DBA team has  limited users to 8 db sessions and this reports fail because it hits the max of 8 sessions. when the limit is removed and when we run a fairly simple report it generated 20 concurrent database connections (not all active, most inactive). When I traced the connections and found it executed 4 distinct queries (1 ran 1 time, 2 ran 2 times, and 1 ran 3 times) and also generated 13 sessions that did nothing.   when I executed the report multiple times and I saw connections grow up to 38…  this is just for a single user/report.

Are you aware of any settings inside the app that will tell it to reuse connections or anything like that?  We have concerns about opening up so many connections for just a single report.