DoubleLine bond fund manager Jeff Gundlach is on CNBC following the FOMC decision and he called for a rally in bonds. There certainly is one today with yields 7-13 bps lower on the day and that's after trading higher earlier.
US 10 year yields
Powell wasn't hawkish today and the Treasury announced today lower-than-feared borrowing in the 10-year and 30-year tenors.
Regarding price action in bonds he said "this is the classic price action before a recession".