I agree with you . But I also read that if 2 or more things are considered as one , we should use singular verb like this sentence: Egg and milk is my favorite meal for breakfast. What do you think?
The principle of 'notional concord' explains the following:
"The hammer and sickle WAS flying from the flagpole." "Danish bacon and eggs MAKES a good solid English breakfast." "The Bat and Ball SELLS good beer."