Some of Garmin model are capabe of running so called Adventure racing mode (https://support.garmin.com/en-US/?faq=Lmyhw4JHQDAXVFYMZ98Hl7) where all data is recorded, but navigation and ditance data are locked away from user until activity stop.
I dont see it is possible use it on FR 945( 955 ?) .
Does it depends from HW capabilities or why this function is not made available for FR high end models.
I do such races (also orienteering) sometime and buying new watch seems little overkill.
(Hoverver Epix 2 appears pretty appealing due screen)
Thanks.