This appears to be a stale toolset issue. The connector was updated on September 20 with two new reads: “Trip readings, fix by fix” (get_trip_samples), every fix of one trip, and “Sailing readings across trips” (list_sailing_samples), the engine-off fixes across a period, for exactly this kind of work. Each row carries time, latitude, longitude, SOG, COG, apparent wind speed and angle, and whether an engine was running. Engine RPM and any other reading the boat reports (depth, pressure, your own sensors) can be requested by name.
Your assistant’s summary matches the older tool set, so its list of tools is probably from before the update. Disconnecting and reconnecting the Saillogger connector, then starting a new chat, refreshes it. You can also ask directly: “Use get_trip_samples for the trip on September 20 and give me the rows as CSV.”