I wouldn't be too concerned, especially if VPN is working normally.
Regarding -
SSPI client process is VpnSvc,
That means the failed TLS connection came from your VPN service. Since you use Norton VPN, it is most likely related to Norton trying to connect to one of its servers.
The different PID numbers just mean the VPN service restarted or ran as a new process.
I would only worry if Norton VPN keeps disconnecting, websites stop loading while VPN is on, or you start seeing certificate warnings.
If everything is working normally, I would just monitor it for now, or run these by Norton support.