So I just ran the math, and Time Walk + Crush is MAJOR SHENANIGANS when Intercept is involved.
Let's take a look at Goddess White's weapon. If she's just slaughtering things normally, then each turn Time Walk gains 2 extra stacks of 1d3,000 to add to all her future attacks (4 stacks when her OP is doubling her APT).
For sake of simplicity, let's assume that every dice roll is half of maximum (1,500). So the amount Time Walk adds increases by 3,000 every turn (6,000 with OP). Crush then multiplies that by 3 to get 9,000 (18,000 with OP).
Sounds pretty good, right? Now let's see what happens if someone intercepts her and she wins the Intercept.
First thing that happens is that each attack rolls MM twice, once when going against the enemy attack and once when going against the enemy's defensive string. This doubles how many stacks Time Walk gains each turn from 2 to 4 (4 to 8 with OP), causing it to increase in value by 6,000 each turn instead of 3,000 (12,000 instead of 6,000 with OP).
Crush then multiplies that by 3, causing the Total Damage of her initial attack to increase by 18,000 (36,000 with OP) each turn.
Then the Unblockable damage resulting from the Intercept goes up against the enemy's defensive string.
First, Time Walk appears in the new damage string, adding 6,000 (12,000 OP) damage to the 18,000 (36,000 OP) that won the Intercept. This brings the total to 24,000 (48,000 OP).
Then Crush multiplies that by 3 again, bringing us to 72,000 (144,000 OP) damage.
That isn't the total damage dealt. That's just how much her post-Intercept Total Damage increases by each turn. The rate at which it grows.