QDM does not currently define allowable combinations of timing relationships and thresholds (e.g. < 1 day). Certain timing relationships intuitively lend themselves to the addition thresholds, but we have found others do not. An example of this is the timing constraint "< 1 day starts during", which has generated confusion among implementers (see CQM-1110 realted issue). Bonnie appears to be able to parse the relationship consistently with the response included in the ticket. Future versions of the QDM should clarify the mechanics of the timing comparisons for such non-trivial cases.