I understand your concern, but the phraseology is careful & correct. The 2 particles (distinguishable, like an electron and a positron) have positions & momenta that are still measurable separately, and thus measurement results for each of the entangled particles can separately be obtained.

:-) Many truphs come from the mouths of the young...!

Nicely done.

I was curious about this so I corrected the scale.

Me too. That's why I became a physicist. Some things I now understand. Some... nobody does.

One step at a time --- we'll get to interference in a later post. Here a measurement is being made that makes such overlap and interference impossible. But even when such interference occurs, **the particle does not go in two directions at once.** That's a key point, to be shown soon.

*stationary* particles are standing waves in fields. Moving particles are traveling waves.