Many thanks for your research and commentary on Mahabharata, the oldest and longest poem in the history of the world, also the source of wisdom for all.
Grandfather Bhisma and Vidura are worshipable, both of them, despite fighting in opposing sides of the battle of Kurukshetra, because they are eternal associates of Krishna.
Best wishes to you from the south coast of Africa.
Jai Sri Radhe Shyam.