The skills in the pools producing the ratings has no bearing on the SSA. A higher rated pool playing the same layout in the morning could produce a higher or lower SSA than a lower rated pool playing that same layout in the "same" conditions in the afternoon. It doesn't matter what the TD says on the report. We have automated decision rules based on the number of propagators and the difference in SSA in the two rounds that determines whether the scores get combined or are kept separate for official ratings.
Rater of the Tossed Arc