And

The English word “AND” is too much overloaded.

There are different notions to disambiguate:

• 2 AND 3 is 5 - a synonym to addition - universal operation of putting together.
• p AND q is a logical connective - an expression context.
• a AND ALSO b is a together with b - a structural (an aggregate) context.
• a AND SIMULTANEOUSLY b - at the same time - environmental (same locality) context.

These notions belong to different contexts and mixing them up is a type-error.

• 3 AND 2 is always equal to 5
• p AND p as an expression is either True or False
• a AND ALSO b is (a, b) which is (or is not) the same as (b, a)
• a AND SIMULTANEOUSLY b are related or not.

Here at the same time (simultaneously) could mean either

• parallel (have nothing in common - unrelated) - may be different environment
• concurrent (interfering with one another) - the same environment (same locality).

Locality is real (actual), time is imaginary (derived abstract notion).