[ntoskrnl]

Yep this is correct. Adding disparate units is almost always nonsensical. You can confirm with a scientific calculator like insect:

  $ insect '5s + 10MB'
    Conversion error:

      Cannot convert unit MB (base units: bit)
                  to unit s

  $ insect '5s * 10MB'
  50 s·MB

[smegsicle]

units, frink, insect oh my