That's odd because Susan Watts said there was a contradiction.
When and where did she say that? Gilligan embellished, but what is at issue is what Kelly told them both, and on that they both agree.
excerpt:
Gilligan took notes using a palmtop computer. Two versions of the notes were found, only one of which mentioned Alastair Campbell.
However, Gilligan's account of the conversation was substantially corroborated by independent interviews given to other BBC journalists, Susan Watts and Gavin Hewitt. Watts had recorded her conversation with Kelly, in which Kelly did indeed say that Alastair Campbell was responsible for changes to the dossier. (As both Gilligan and Watts had spoken to Dr. Kelly on an unattributable basis, he could expect his anonymity to be protected)