Gateway GUI: "Client xxxx" tabs and "x connected" meaning

We have set a new gateway but we don't use it for the moment for any request. Even so, when we connect to the IB gateway GUI, we see many "Client xxxx" tabs:

What do "Client xxxx" tabs exactly mean?

Same doubt with respect to the "2 connected" panel. Who are these 2 connections? (We see 2 or 3 connections even just after starting the gateway)

There is an expandable help box on the left that explains the status lights. The clients are QuantRocket services. The tabs represent previous connections since the last Gateway restart.

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