ðeɪ dɪstˈɪŋɡwɪʃt ʃˈɑːɹpli bᵻtwˌiːn kwˈɛstʃənz ʌv pɹəsˈiːdʒɚ ðə mˈiːnz ʌv əbtˈeɪnɪŋ ɐn ˈænsɚ ænd kwˈɛstʃənz ʌv səbstˈæntɪv lˈɔː wʌt ɪz dˈuː.
They distinguished sharply between questions of procedure (the means of obtaining an answer) and questions of substantive law (what is due).