Yeah but that one wasn't as much of a "arm hair-raiser" in terms of foreshadowing things to come, to me, anyway.
"Communication Breakdown" was a bit of a hit but nothing like "Whole Lotta Love". Back then I didn't know Jimmy Page had morphed 'em out of the ashes of the Yardbirds, and truth-to-tell, I suspect the demographic that embraced "Whole Lotta Love" didn't have much clue, either.
Um, "Whole Lotta Love" IS on Led Zeppelin II...
walrus