The processing time was very long, although I could track the overall progress using the new Elsevier tracking tool. Most of the 'Review' time was spent on Reviewer #2 who did not seem very interested in this paper. That Reviewer submitted one short comment following the first round of reviews stating that they didn't believe the problem was posed correctly but presented no evidence. However, Reviewer #1, obviously an expert in this field, was very thorough and considerate and suggested useful additions to the manuscript. I waited for about 1.5 months before the Editor communicated their final decision to me but no reviewer comments came through, it was just an 'accept' letter.