Tods premonition death

When Alex watches the news footage of the crash, he says that the first explosion occurs over tods seat, implying that he would've died first from this explosion. The problem is, the seat is a window seat and from the premonition we know Tod is in an aisle seat. You could make the argument that Alex sits in tods seat in the premonition but then surely he would've died first in the premonition, or we would've at least seen this explosion in some way. We also see that Tod presumably dies from a falling boom box in the premonition, which further diminishes Alexs theory about the blast path. What do you think is the reason for this continuity error? Rewrites for the blast pattern scene? Do you think the boom box killing Tod was a last minute decision made when filming? And I the only one who gets bugged by things like this?