Final answer:
All of the witness accounts share claims of religious experiences, which may be subject to alternative explanations.
Step-by-step explanation:
All of the witness accounts share some similarity based on the information provided. The information mentions religious experiences and claims made by individuals. It states that not everyone accepts these claims as conclusive evidence of a supernatural reality or spiritual beings, offering alternative explanations. Therefore, the similarity among all witness accounts is that they involve claims of religious experiences, which may be subject to alternative explanations.