Reading over the best description of NTLM for HTTP auth I could find (
Click here), it looks like NTLM requires requests to be sent over the same TCP connection as the original request where the authentication took place. So it doesn't seem like it could consistently work to aggregate TCP connections for NTLM.
3. ...From this point forward, the connection is kept open; closing the connection requires reauthentication of subsequent requests.
I'm still curious as to why SOL5050 indicates there was an issue with OneConnect and NTLM which was fixed.
Aaron