Somewhat like netstat, but with timestamps for connections.
Actually, a side project I have created after spotting the MIB_TCPROW_OWNER_MODULE/MIB_TCP6ROW_OWNER_MODULE structures have the (documented!) liCreateTimestamp field - https://docs.microsoft.com/en-us/windows/win32/api/tcpmib/ns-tcpmib-mib_tcprow_owner_module