Not really sure what you mean by this....
Disconnected scanner uses a 'Web connection' (through HTTP request) only to upload disconnected scan results to ILMT sever.
(https://www.ibm.com/docs/en/license-metric-tool/9.2.0?topic=server-uploading-disconnected-scan-results)
That upload is conducted by means of curl or PowerShell.
Any related HTTP session handling is processed internally by curl/PowerShell itself.