On the Run summary page, some runs have “Laps” and other runs have “intervals”. Only the runs with “Laps” header include Stryd IQ Lap Power (when holding phone in Horizontal position), while the runs with “Intervals” do not. See photos, far right columns.
The irony is that I need the lap power for my interval sessions, and this it is the primary reason I don’t use Garmin connect!