1) Segwit does improve transaction throughput, but it does so by improving the efficiency of transaction storage on the blockchain. 2) The Lightning Network im

1) Segwit does improve transaction throughput, but it does so by improving the efficiency of transaction storage on the blockchain. 2) The Lightning Network improves transaction throughput by moving transactions off the blockchain, and requires segwit to be active for reasons apart from its transaction efficiency, specifically that it fixes the transaction malleability problem.