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HL75P is a small conduit that turns a Herschel to a pi heptomino. If followed by PF35W and WFx46H, it will yield a conduit that turns a Herschel left in 156 ticks, i.e. an L156. But despite having same rotation, same step, and same repeat time, this conduit and the regular L156 are otherwise unrelated.
The final eater catalyst at the top of the conduit can be removed to extract an extra glider with canonical ID NW19T102.