Complex sentence: Justice Stark intervened during Boothroyd's testimony, asking how he could give a reliable opinion on Lamb when he had never examined him and also pointing out that his opinion was contrary to every doctor who had testified so far.
Split into simpler sentences: Justice Stark intervened during Boothroyd's testimony, asking how he could give a reliable opinion on Lamb when he had never examined him. He also remarked that his opinion was contrary to every doctor who had testified so far.