28/08/2022 09:32:11 | climateprediction.net | Sending scheduler request: To send trickle-up message.
28/08/2022 09:32:11 | climateprediction.net | Not requesting tasks: "no new tasks" requested via Manager
28/08/2022 09:32:11 | climateprediction.net | [http] HTTP_OP::init_post(): https://www.cpdn.org/cpdnboinc_cgi/cgi
28/08/2022 09:32:11 | climateprediction.net | [http] [ID#1] Info:  Too old connection (356 seconds idle), disconnect it
28/08/2022 09:32:11 | climateprediction.net | [http] [ID#1] Info:  Connection 163 seems to be dead
28/08/2022 09:32:11 | climateprediction.net | [http] [ID#1] Info:  Closing connection 163
28/08/2022 09:32:11 | climateprediction.net | [http] [ID#1] Info:  schannel: shutting down SSL/TLS connection with www.worldcommunitygrid.org port 443
28/08/2022 09:32:11 | climateprediction.net | [http] [ID#1] Info:  schannel: ApplyControlToken failure: SEC_E_UNSUPPORTED_FUNCTION (0x80090302)
28/08/2022 09:32:11 | climateprediction.net | [http] [ID#1] Info:    Trying 129.67.193.7:443...

Why a line about shutting down connection with WCG on a line from CPDN?

I don't think it's "on a line from CPDN" but in general a http_debug line. It's because of your scheduler contact with CPDN, and during that contact the connection to WCG is closed. When else do you want the message that the connection to WCG is closed?

Thanks, just don't think I have seen that one before.