What are you using to do your research? The creditor's site is generally a good starting point.
"You, as the primary cardmember, will earn a total of 1 mile for each $1 of Net Purchases. You will earn an additional 1 mile for each $1 of Net Purchases (for a total of 2 miles) where United Airlines is identified as the merchant on your monthly credit card statement. Therefore, United purchases on some discount travel websites and on board will not qualify for the stated rewards offer."
Apricot wrote:I have a Chase Sapphire card (Regular) can I use that to get double points on dining and transfer those points 1:1 to united miles thru chase ?
Nope. You'd need the CSP to transfer. Again, details are on the creditor's site. Read carefully.