@Mwfan1921 I don’t read that as internet usage is explicitly prohibited. In fact, in one of their tips CB specifically noted that internet searches are typically less helpful than class notes.
https://apcoronavirusupdates.collegeboard.org/students/open-book-tips
FWIW - In my view, the CB prohibited students from receiving and providing aid, as well as plagiarizing online sources, but didn’t prohibit searches.