My bad, I meant redirecting the stderr output to /dev/null. I lost my initial message and typed a short version too quickly :(

For a contrieved (but the first I can think of)

    dd if=/dev/abc status=progress 3>/dev/null | pv img

As for why I lost the message... I went over my HN time with the Leechblock extension (I know there's noprocrast here), anit doesn't cache POSTs...