Kunti Vs Gandhari

Their Eldest Sons Were Die Hard Friends

1. Kunti's Son Karna 
2. Gandhari's Son Duryodhana

When Insulted

1. Duryodhana Stood by Karna when Pandavas and Draupadi Insulted him
2. Gandhari Stood by Pandavas and Draupadi when Kauravas Insulted them

At The End When Gandhari Left For Forest Kunti Accompanied her

Both Were Students of Durvasa