I filled out Hilton's form at statusmatch.hiltonhonors.com back in April with proof of Marriott Silver Status even though the site says it's only for Gold and Diamond. I got an email saying they weren't matching silver status but they offered me a challenge for gold--5 stays or 10 nights within 90 days to get Hilton Gold through March 2020. By early June I had completed 10 nights and my Hilton Status was upgraded to Gold about 4 days after I had my 10th night.