Add additional checks to the calibration data
If you want a "what's best for ensuring scientific integrity of our results" answer, then I would request a few example [bode plots, showing magnitude and phase] plots that each have • the example event's calibration envelope[s downloaded from the /O3C01/H1/ and /O3C01/L1 dircetories], • the envelope's GPS time, the Event's GPS time, and the time difference all clearly displayed on the plot, and • the [median and 68% ci of the spline fit] mimic of the envelope -- i.e. that which will actually be sampled -- computed by whatever process has been decided for O3b, which I think is a O1-O3a standard 5-point spline interpolation of the envelope.