Example 1
A: We don't need some employees at this company.
B: mm/hm/um huh/okay.
Does this only mean that B is paying attention, like saying "Okay, I am listening"?
Example 2
A: We don't need some employees at this company.
B: I agree/Yes/right.
Does this mean that B is also thinking that they don't need some employees at the company?