פירוש על עבודה זרה 119:6

According to this version, all would agree that if the non-Jew puts direct force on the grapes, the grapes are prohibited. They only disagree about a case where the non-Jew set up the press but did not put direct force on the grapes.

According to a second version of the dispute, a more lenient one, they disagree only when there is direct force. If there is only indirect force, all agree that it is permitted.
However, the story shows that amoraim continued to rule strictly even in cases of indirect force.