Yes, some minor overspray is normal on all four edges of the intake and on the bypass hose, fitting and clamps, all of which were in place when the engine was painted; a vacuum-formed plastic mask was used during painting, but it wasn't always a perfect fit around the edges.
Interestingly enough, my research into the intake vac-forms seemed to show that as they aged ( painted over & over again ), they actually started to
rool back on the edges. That might explain why some engines have more overspray than others. At some point in the process, the vac-forms were
simply replaced. I'd love to see a picture of this process or find an original vac-form some day.