Now we will compare the 2 people. The Egyptians and the Hebrews. Remember the Egyptians are out of Kwam or as commonly known Ham. This means hot and Black. The Hebrews on the other hand are out of Shem. More than once throughout the Torah a Hebrew is mistaken for an Egyptian. Below is a passage where Joseph is burying his father Jacob In Canaan. One must note that the Canaanites lived with the Hebrews and should have been able to tell an Egyptian from a Hebrew if they looked different right? Take note specifically of verse 11.
Bible Gateway passage: Genesis 50:7-12 - King James Version
"7
And Joseph went up to bury his father: and with him went up all the servants of Pharaoh, the elders of his house,
and all the elders of the land of Egypt"
"11 And when the inhabitants of the land, the Canaanites, saw the mourning in the floor of Atad, they said,
This is a grievous mourning to the Egyptians: wherefore the name of it was called Abelmizraim, which is beyond Jordan."
How did the Canaanites not know that it was a mixed procession of Hebrews and Egyptians? I mean they lived with the Hebrews and were familiar with the Egyptians. The only rational conclusion one can come to is that it was impossible to tell them apart.