For the last 10 years or so, as my parents approached old age and increasing fraily, I would sometimes accompany them to the funerals of their friends, if it was further than my Dad was comfortable driving.
I would sit there during the service in awe of how composed the close mourners were and wonder how they could be so calm. For as long as I've been aware of my parents mortality, I've dreaded the day where I'd become 'that' person and be the one at the front of the church who everyone would look at with such sympathy.
My dear Mum died last year and left my Dad a devastated widow, he was truly inconsolable. Mum's funeral passed in a haze - I apparently read a beautiful, faultless eulogy of which I have very little recollection. I only remember being focused entirely on Dad and getting him through the day. I do recall being very happy and chatty at the wake and happy at seeing people I hadn't met with for years.
Some 11 weeks later my Dad also passed away. I was dreading his funeral more than Mum's, as I was struggling to cope with the intense grief of losing them both so close to each other and knowing I didn't have the distraction of having the remaining parent to focus on. Yet the exact same happened again - I was determined to remember more of Dad's funeral as I felt so guilty about seemingly breezing through Mum's - but no, once again I carried out my lengthy eulogy and once again I didn't shed a single tear. And once again I laughed and joked with family and friends at the wake afterwards.
I truly believe that your entire being goes into preservation mode at times of undue stress. If anyone had told me before Mum and Dad died that I would be so unemotional, I absolutely wouldn't have believed them. I can't honestly say that either funeral gave me any closure particularly, but I do know that the real grieving for me started weeks and months after their funerals had taken place.