One of the reasons Calibri was selected over Times New Roman was it has a lower rate of OCR transcription errors, making documents using it easier for people using screen readers.
That doesn't make much sense, since a typewriter will neither type Calibri nor Times New Roman. And OCR should only be needed for type written documents, because any document made with Calibri or TNR is already digital.
Link on that, as OCR should be more reliable with Times New Roman due to significant serifs.