In Schweser the TPPC formula states:
Current cost+ interest cost-actual return in plan assets +/- actual gains/losses due to changes in assumptions + prior service cost.
Question: Does actual gains and losses due to changes in assumption include the difference between actual and expected return in plan asset?
I understand that actuarial gains and losses should include both amount but based on one of the exercises in Schweser, they seem to ignore the difference between actual and expected return on plan assets. Unless it’s implicitly included in actuarial gains and losses due to changes in assumptions?