This picture is a depiction of Brahman manifested as Lord Krishna indicating that I am the food, I am eating it I am the process of food coming into existence. It's like the eater, the eaten, the process of eating is all Brahman. This context is mentioned in Bhagavat Gita 4.24 as four karakas and one palan.
Lord Shiva and Lord Vishnu are best friends . All 14 worlds, all vedas exist because of their friendship . One thinks about other all times . They chant each other names all the time .
Friendship's true meaning is provided by them .
While Lord Vishnu is undefeatable , Lord Shiva is unconquerable .
So answering to your question , Lord Shiva do chants Lord ...