Complex sentence: Al helps Sam overcome some facets of his "swiss-cheese memory" and provides information on history as it originally happened as well as updates future events and relates possible outcome probabilities as percentages using a handheld communication device in contact with Ziggy.
Split into simpler sentences: Al helps Sam overcome some facets of his "Swiss-cheese memory" and provides information on history as it originally happened. He also updates Sam on future events and relates possible outcome probabilities using a handheld communication device in contact with Ziggy.