Yes;
Example 1:
Have DilutionStart, DilutionEnd, DilutionEvent log in the Dosing automation events - i.e. individual log for Latest OD > Target OD, Latest OD < Target OD, Cycle summary (aka DilutionEvent), respectively.
Example 2:
Include timestamp, elapsed time for dilution start and dilution end in the DilutionEvent of the Dosing automation event
The idea is to have start and end datapoints that can be used to separate the growth phases into sections on the OD measurements.
Does this makes sense?