I'll be very interested to hear what you have to say about these two logs. Both were made over the same stretch of mostly flat road as used previously but in opposite directions (out and back). In both cases the CEL did not come on. P0171 from two days ago was cleared before logging and I'd driven about 10 miles before commencement of logs.
In some Subaru FSM's, the Diagnostic section for the Engine [( "ENGINE (DIAGNOSTICS) EN(H4DOTC)(diag)"] includes a sub-section entitled General Description. This contains a list of all the trouble codes, and detailed descriptions of the detecting criteria used for each code, i.e., what test the OBD does, under what conditions, what comprises a "no good" finding, and how many such findings are needed to set a code and trigger a warning light. ["Diagnostic Trouble Code (DTC) Detecting Criteria"] Unfortunately, the same detecting criteria information isn't available for the automatic transmission codes.
In light of this, I too am not sure why the diagnosis light did not come on. Again, it appears the L/U function was shut down, presumably based on the difference between the engine and turbine speeds, i.e., L/U was not being approached, let alone achieved, while the clutch apply pressure was supposed to be high. Perhaps on a subsequent drive the light will appear. In any event, it's likely either the control (valve) system is malfunctioning, or the lockup clutch itself (mechanically) is not working.
I don't think the TCM OBD test for the P0741 can be readily disabled. However, others with more detailed knowledge of the (software) system might have ideas.