Complex sentence: While setting up the bomb, Boerth drops the knife part which is recovered by a crew member, to cover up the loss of his knife, Boerth stole the knife from fellow Rigger Ludwig Knorr.
Split into simpler sentences: While setting up the bomb, Boerth drops the knife part which is recovered by a crew member. To cover up the loss of his knife, Boerth stole the knife from fellow Rigger Ludwig Knorr.