Is it not obvious from QBL reports & correspondence that the delay was due to ASX halting QBL from any further trading action until they definitively committed to either buying out the balance of MCL or spinning it off altogether?
And therefore the final decision to buyout the remainder had ramifications of:
(a) any prior contracts that may have involved a spun off MCL & shares issued in a newly listed MCL in exchange for its acquisitions all had to be re-written;
(b) The QBL/MCL final 45% acquisition being written;
(c) QBL changing its primary activity from Bauxite to Cannabis/Hemp & preparing all the associated ASX required documents/presentations etc.
All of which took time & would have had to pass through ASX scrutiny individually I would think.
There was a statement I remember reading (may have been in the report) which said all of this too.
EDIT: I note you ask for the 'exact' part. All of them combined - doubt they would pinpoint one issue.
