In Spotlight v11.5.3.7924, there is an discrepancy in the wait time shown in Spotlight.
The home page shows the Wait Time in seconds, and the drilldown for this metric shows the wait time in milliseconds, however the calculation is incorrect, and shows millions of milleseconds, e.g. 4 seconds shown on the homepage, but 4 million milliseconds shown in the drilldown details, which is incorrect.