What is the burden of ineffective counsel on appeal?

[Citation.] Accordingly, we have characterized defendant's burden as 'difficult to carry on direct appeal,' as a reviewing court will reverse a conviction based on ineffective assistance of counsel on direct appeal only if there is affirmative evidence that counsel had ' " 'no rational tactical purpose' " ' for an action or omission [citation]." (People v. Mickel (2016) 2 Cal.5th 181, 198.) " ' "[I]f the record on appeal sheds no light on why counsel acted or failed to act in the manner challenged[,] . . . unless counsel was asked for an explanation and failed to provide one, or unless there simply could be no satisfactory explanation," the claim on appeal must be rejected.' [Citations.] A claim of ineffective assistance in such a case is more appropriately decided in a habeas corpus proceeding." (People v. Mendoza Tello (1997) 15 Cal.4th 264, 266-267.)