Finding a product online is easy. Deciding whether it is the right one can still mean switching between search results, sizing charts, product pages, and a support conversation that starts from scratch. Loops is betting that retailers need a shared intelligence layer connecting those moments. Loops has announced a $3.5 million Seed round from a16z speedrun, NTT Docomo, Connecticut Innovations, Alumni Ventures, and Monday Capital. The company plans to use the funding for product development…