EXACT CONGRUENCES / SHARED ADDRESSES
Where strides meet.
And why they might not.
Two strides share an address precisely when their origin difference is divisible by their greatest common divisor.
Evidence checks the first 4,096 addresses at most. A joined period outside the recipe domain remains exact in the report; transfer is unavailable.
First 128 addresses in the window
A ✓ / B ✓ show which stride accepts each address. Green means both accept it.