Happy to be told I’m wrong (I probably am) but think that the 2 terms are for the same concept, though I think the original ‘faster reading’ study wasn’t done with texts that you study in mind.

I think they are different and I donmt use the interchangeably. For me the Sussex study was focussed on KS3 and wasn’t for long term retention of the texts themselves but to improve readers and had a particular approach in terms of interrupted reading. Cold read with GCSE - whole text, main themes 1