I think they make it normal and you can't spot a mathematician or a physicist out of a certain social group until they tell you who they are.
But to be precise enough, they are completely different and think far from normal when doing their specific job.
An easy-going engineer might assume that e = π =3. in emergent situations whereas a mathematician can only be satisfied with precision to the nearest 10th digit.
A mathematician would say that the yield of mathematical equations and reality or what we observe in nature may be two different things, but a faithful physicist insists that they should be one and the same.