The Tur writes in OC Siman 219 ("sif 6" in the newer prints) that if one didn't make the bracha of hagomel at the proper time, then they are still able to make the bracha whenever they'd like.
The Beis Yosef writes there that this is the "svarah" of the Tur but that the Orchos Chaim writes in the name of the Ramban that one has until 3 days after they were required to make the bracha, to do so.
In the newer prints of the Tur-Beis Yosef there are often sources next to poskim that are brought down in the Bach, Beis Yosef, Prisha, etc. However in this case the printer did not write any source next to the Orchos Chaim or Ramban. Is it known where this is written in either the Orchos Chaim or Ramban that hagomel can be made until 3 days?