GDP adjusted for inflation is 2.14 %
The difference, the GDP deflator, is .93% or 1%.
If they used the Fed's favorite inflation gauge, PCE, which is at 1.3% RGDP would be lower.
If they used Core CPI which is at 2.0 % RGDP would be even lower.
If they used Median CPI which is at 2/1% RGDP would likewise be lower.