So Bard probably dies holding thranduils hand with his head cushioned in his lap.
He’s old and coughing, but he’s not dying of old age, no. He dies trying to protect his people from an orc raid, so when he coughs it’s to cough up blood.
Thranduil closes his eyes and he sheds a single tear, and when bards breathing starts to slow, Bard reaches up and caresses his cheek to wipe away the tears “don’t cry, pretty. All will be well.”
And then he’s gone and thranduil let’s out a single wail and then he is silent in his grief.
Later, the bardlings have finally arrived as fast as they could and come to see thranduil, drinking alone in the tent. When they ask where Da is, thranduil just looks up and the glistening of his eyes says it all.
Tilda let’s out a broken “no” and bain storms out in anger, kicking things as he goes. Sigrid let’s out a choked sob, shaking and hand coming to cover her mouth.
But before she can fall thranduil scoops her up in his arms, crying into her hair as he strokes it and she clings to him for support