I think my dad knew what is waiting after death

So, background my dad 49 passed away due to self inflicted means last year. However, there’s a strange mix of things that have led me to believe he knew what was waiting for him. My dad was always the sceptical type bever quick to believe anything and always tended to be very private and cautious about what he shared which is why everything he said was odd.

The main start of all this was when me and him went on a late night walk (not necessarily related but if you were curious it was probably all less theb like 100 metres from a Tudor era castle) and on this walk I remember he was about 3 metres ahead of me facing away so there would’ve been no way for him to see me or any expressions etc… and I suddenly get an intense feeling of dread likr I’m being watched and not even a few seconds later he asks me if I felt that without turning around or anything so I responded yes and all he followed up with was “she seems friendly I think she just likes to walk with us sometimes” or something to that effect je was very very guarded around any follow up questions however since then when bringing up topics such as death he has talked about seeing my grandmother after death and talked about death as though he is aware of what it’s like and knows something saying stuff like how it’s peaceful after death and implied he could see and communicate with spirits in everyday life. Ontop of talking in a way that makes me believe he knew exactly what the afterlife was like and I remember having conversations about the afterlife and what we thought it was like but I can’t remember what he said specifically because it all seemed like a ephemeral speculation at the time as it was long before I started putting the pieces together .

I didn’t know what to do with this story and it’s something that has always made me unbelievably curious as to what exactly he knew and could see that he just didn’t share.