Hi little stitcher,
More than often the fallout comes later - a year or two. I believe this is due to the fact that, at the time you are in survival mode, it's pure biological and primal survival. It's only after that, that the brain and spirit begin processing what was just gone through, then the shock hits, along with the tears and pain. Finally, you can grieve and process - something that there wasn't time for when the focus was on keeping the biological system alive.
Also, there is the added blows of "chem brain" (can search this well known side-effect), and post traumatic stress disorder(PTSD) to contend with, again, comes after the fact. The emotions run very high at this time, and the brain is (can be) in trauma.
A support group can be helpful, 1:1 counselling too, creative arts - gardening, join a "Men's shed", or other group, doing a building project, painting, bush walking, mosaic-ing.. (to express the inexpressible; trauma is said to lie within the non-verbal parts of the system so a start to dislodging it, and processing it is to do things that are non-verbal). Really working on a project that can allow time for reflection. Writing about it can help too. All depends what suits the person best, but highly important and valuable in my opinion (and experience) to take time out to acknowledge this healing process of the journey. Even to the point that it is scheduled and disciplined time consciously put away to do the "my healing project", state it and do it, not in an airy-fairy way :)
All the very best, and congratulations for getting through such a tough journey together.
Sincerely,
Sarah.