A specific extension request for the FBAR return is not required, and is not linked to an extension for the Federal return. Without any specific information about the firm you mention, I can only assume that the information provided by the IRS and FINCEN is correct.
https://www.irs.gov/businesses/small-businesses-self-employed/report-of-foreign-bank-and-financial-a...
https://www.fincen.gov/sites/default/files/shared/FBAR%20Line%20Item%20Filing%20Instructions.pdf
