Combine Two Websites into One Squarespace Site

I currently have two separate websites: one is already on Squarespace, and one is currently built on Webflow. I would like to combine both sites into one unified website on Squarespace. I will keep both domain names, so visitors going to either address will land on the same site. I’m looking for someone who can help migrate content, preserve functionality, and ensure a smooth transition for both domains.