The debug output indicates that FortiGate connected to one server (173.243.141.16) to retrieve contract information as it shows four FortiGuard requests without any packet loss, which confirms the connection to the server. Additionally, the default FortiGuard communication settings are being used, as indicated by the use of the HTTPS protocol on port 443, which is the default setting for FortiGuard connections.
References:
* FortiOS 7.4.1 Administration Guide: FortiGuard Connection Settings