A customer asked for clarification on the Maximum Number of Concurrent Incoming Connections setting for their M10 Atlas cluster. The current setting for an M10 Atlas cluster is 350 connections.

Here is the customers request:-
"Help confirm if the number of connections from the Atlas administrative
agents are added to the billed connection count on our account. We believe
that 350 connections should be enough for our operations but we did not
factor in the connections from the administrative tools."

I couldn't find any documentation to help explain that a portion (approx 20 connections) of their 350 Concurrent Incoming Connections limit are used by Atlas administrative tools eg. monitoring. Please provide clarification in the docs. Thanks.