Estimating the OA/phone screen to application ratio at FAANG

I've heard that the overall acceptance rate for FAANG is about 0.25%, so one in 400. I've also heard about 25% of initial callbacks/OAs lead to a loop, and about 20% of loops lead to an offer. Using t

I've heard that the overall acceptance rate for FAANG is about 0.25%, so one in 400. I've also heard about 25% of initial callbacks/OAs lead to a loop, and about 20% of loops lead to an offer. Using this logic, the callback rate would have to be roughly 5%. Is this accurate? I keep hearing the overall callback rate in this industry right now is about 2% for someone with internships and a degree, so with big tech scaling much more, it makes sense their callback rate would be a bit higher. Anyone disagree? I rarely see discussions on here about getting an interview in the first place.