Hello! New Amiga fan here in 2023

From the above I could not figure out whether the 8375 / 390544-01 is a 2MB or 1MB chip. Is BBoAH correct with the 2MB spec for this chip?
Most of the times it is referenced as a 2MB chip but in this datasheet (390544-01_8375_Agnus_specification.pdf (amiga.serveftp.net)) (also found on this site) this particular chip is listed as a 1MB chip.
Thank, Aron