Function handling the connect request from the Central?

Hi,
not really an issue, more of a question. I was searching for the function that gets called when a CONNECT_REQ from the central has been received and the connection procedure is initiated in the _bleperph_ example project, but I can't seem to find it. Of course there is the bleprph_gap_event function with the BLE_GAP_EVENT_CONNECT event it responds to, but it seems that it is called **after** the connection is already established, not when the Central sends a CONNECT_REQ.
I am interested to see the code that gets executed after a Central initiates a connection, can someone point me to it?
Thanks in advance.

Start with the _bleprph_ example and its bleprph_gap_event handler, then trace BLE_GAP_EVENT_CONNECT and the connection path for an incoming CONNECT_REQ. Done means identifying the relevant entry point and documenting when it runs relative to the established-connection event.

Written by the indexing model from the issue text.