Stephen Bardo, former NBA star and now basketball analyst for Fox Sports One, was commenting at the end of the Indiana/Butler basketball game how Indiana came back strong in the second half. This is a mashup of “turn up the heat” and “take it up a notch”, both meaning to do something with more determination or intensity. This is a classic congruent conflation, mixing two similar meaning idioms together. They tend to be subtle and therefore a little more difficult to spot. Kudos to Bruce Ryan for hearing this one and calling it in.