Yes, when I access http://<hostname>:<port>/sap/bpc/ I am logged in. I configured SPNEGO in the SICF service at default_host/sap/EPM_BPC.
The info you have provided has given me a few ideas. I will do some more tests and get back to you soon. Thank you so far for your help.
@Dennis - sorry to take over your thread. Hopefully the info Chris has provided has given you what you needed ?