We all process information at different speeds, and we process different information at different speeds. Trying to discuss something that one of you has not fully processed is useless at best, and potentially disastrous. So, make “I need a bit more time to process that” a safe and valid thing to say in your marriage – just don’t use it as an excuse to avoid something you don’t want to talk about!
It took me a long time in our marriage to realize this. I tend to be very quick in analyzing things and arriving at a decision. My wife preferred to get the information and process it for a couple days, something which was frustrating to me. I have come to realize that I need to honor that and not be impatient with it, as was my habit. The benefits to both of us have been well worth the effort.