I don't know if I'm misunderstanding or not, but the "ticking" set of samples has the prechorus scratch, not the droning sound at the end of side A. I don't quite know where that sample would even appear as a scratch in the song to be honest; it's very similar to A Place for My Head and no scratches in ETR really sound like the ones in APFMH. Any clarification would shed some light for me.
Also, it's interesting to note that one of those Hit the Floor scratch samples is the same one used in both The Catalyst and Nobody's Listening.