No, this is something different. This glyph may be a "B", but not in the same sense that our Latin B is a B, or even in the same sense that Hebrew bayt is a B.
Remember, most Hieroglyphs had two or three consonants, and there was no Ancient Egyptian "alphabet", that is something they made up for tattoo's and tourists. When you wrote something in Egyptian, you didn't just combine a bunch of characters that each had a single consonant sound, that was an innovation of the semites. Then later the Greeks come up with the concept of vowels.
Apart from being shaped vaguely like a house, another clue is in the name. Semitic B's have a name that means house.
Remember, most Hieroglyphs had two or three consonants, and there was no Ancient Egyptian "alphabet", that is something they made up for tattoo's and tourists. When you wrote something in Egyptian, you didn't just combine a bunch of characters that each had a single consonant sound, that was an innovation of the semites. Then later the Greeks come up with the concept of vowels.
Apart from being shaped vaguely like a house, another clue is in the name. Semitic B's have a name that means house.