ESP_IDF Jumpstart, BLE Provisioning - detect Client connection

[plusorc]

Hello

I recently worked with the jumpstart project of ESP-IDF
Everything is working great actually .

Now the problem is I have to detect when a client is connected (a mobile phone in this case),
before it sends credentials to provision the wifi.

As far as I understand , this should be reported in the update_connection_param event ?
but how to Get this info while using the wifi_prov_mgr ?

in summary : I need to catch the event of a client connected/connecting while still using the wifi_prov_mgr in the Jumpstart project .

P.S
I know the GATT_Server_Demo example , the point is .. Espressif's WIFI_PROV_MGR makes a setup that is
compatible with Espressif IOS/Android apps for provisioning .. and I need those to keep working