American Football Rules IFAF Approved Ruling – 3-3-2:X-XI

X. The score is 35-0. The trailing team scores a touchdown to make the score 35-6. RULING: The clock stops when the touchdown is scored — the margin is no longer more than 34 points. Normal clock rules then apply unless/until the leading team increases the lead to more than 34 points again. [Cited by 3-3-2-g-1]
XI. The score is 41-0. The trailing team scores a touchdown to make the score 41-6. Then they kick the extra point to make the score 41-7. RULING: The clock stops when the try is scored — it is only then that the margin drops to 34 points. [Cited by 3-3-2-g-1]