I have no doubt that both BMY and Merck fully understand the value of NWBO. BMY's close collaborator (Universidad de Navarra) did extensive research on the combo trials using dendritic cell which were completed or nearly completed before BMY struck the trial deal with NWBO.
Here are the trials on dendritic cell by Universidad de Navarra. I haven't read any publication of special significance from these trials, which is not surprising. Otherwise BMY would not come NWBO for collaboration. NWBO has something that BPs hunger for.