If you had 12 inch diameter logs that were 16 inches long, you could stack up 96 such blocks into a 4x4x8foot crib. (Assuming they were all perfectly straight.)
Once they were split, they'd pack a bit tighter. Assume you'd need 10% more. So, could someone split ~110 blocks in 10 minutes (600 seconds)? You'd have about 6 seconds to grab a block, split it (let's say into fourths), toss the pieces out of the way, then grab the next block.
If everything was all set up, all the blocks were straight with no knots, I could see maybe 20 minutes (12 seconds per block) as "do-able."
Once they were split, they'd pack a bit tighter. Assume you'd need 10% more. So, could someone split ~110 blocks in 10 minutes (600 seconds)? You'd have about 6 seconds to grab a block, split it (let's say into fourths), toss the pieces out of the way, then grab the next block.
If everything was all set up, all the blocks were straight with no knots, I could see maybe 20 minutes (12 seconds per block) as "do-able."