Hangfire 2.5.1 redis net framework 4.6 limit connections

Hi, anybody knows how hangfire with redis manage the connections?
We have a hangfire pro with redis on a service developed in net fwk 4.6 and 20 workers.
I read some topics and it said thar it opens 2 connections and those connection are managed by the multiplexer.
But my service open more than a hundred of connections and I don´t understand why.

Thanks and best regards.
Javier