Thanks Nick. I guess I am getting mixed up with other videos which I saw of using SNC for sapgui and then workaround to call CRM_UI.
I will have to see again all vidoes and read between the frames :-)
I understand now that after ABAP- SPNEGO config I do not have to login to SAPGUI for enabling SSO in CRM_UI.
Couple of more clarifications required:
1) This solution requires installation of Secure login client on top of SAP GUI. (In video 3)
Does this mean that I need to have SAPGUI and Secure login client installed on all User machines for SSO (CRM URL) to work ?
(Basically, some of users only use URL to crm ui and do not ever login to SAPGUI and hence I do not want to install SAPGUI on all PCs and also I do not have any JAVA stack in landscape)
2) Does this mean that even if I do not want to use SPNEGO and want just plain SNC-SSO between SAPGUI and Windows AD, I need to buy NW SSO license?
(As this also requires Secure login client to enable SNC and am not sure in past whether there were licenses required for this)
Thanks again !!