Does thinking about or recalling something—intentionally or unintentionally—while uttering the Two Testimonies of Faith necessitate their repetition?

Frequent remembrance of Allah is among the best acts of drawing near to Him. It is best for the one remembering to ponder the meanings of what he says and to strive for the presence of his heart. However, remembrance without the presence of the heart does not invalidate it nor does it necessitate repeating it. Therefore, be diligent in remembrance in every state, for remembrance with heedlessness is better than abandoning it entirely.