No. Consistency means accurately describing the same underlying facts, not repeating identical sentences. A shorter explanation or different wording is not automatically a contradiction. However, a different travel purpose, funding source, or employment situation may require clarification. If circumstances genuinely changed after submission, be ready to explain when and why, and check the relevant post's updating instructions. Preparation should focus on understanding your submitted information and reviewing appropriate records rather than memorizing a script. Ask for clarification if you do not understand a question, and avoid presenting an uncertain recollection as a confirmed fact.