Do superiority-violating multiple singular which-questions have pair-list readings?

Sentences like (1) with multiple singular which-phrases give rise to a pair-list (PL) and single-pair (SP) reading. (1) Which boy likes which girl? A complete answer to the PL reading of (1) determines for each boy which girl he likes. A complete answer to the SP reading is about a single boy-girl pair. Kayne (1983) and Pesetsky (1987), among many others, point out that multiple wh-questions with which-phrases tolerate superiority violations, as in (2). The authors conducted an online experiment to investigate which hypothesis is correct. The task of their experiment was to judge the felicity of question-answer pairs on a scale of 1 (very unnatural) to 5 (very natural). There were 12 critical items, 6 of which involved superiority-obeying questions like (1) and 6 of which involved superiority-violating questions like (2). All of them were paired with a PL answer.