Does the question of whether a defendant was a major participant in the underlying felony and acted with reckless indifference to human life apply only to defendants convicted of felony murder?

The question of whether a defendant was a "major participant in the underlying felony and acted with reckless indifference to human life" is relevant only to defendants convicted of felony murder. ( 189, subds. (a) & (e); People v. Lopez (2019) 38 Cal.App.5th 1087, 1103, fn. 9, review granted Nov. 13, 2019, S258175 [whether a defendant acted as a "major participant in [the] underlying felon[y] and acted with reckless indifference to human life" applies "solely in the context of the felony-murder rule" and is irrelevant to a conviction under the natural and probable consequences doctrine].)