Yeah. That makes sense. But they could've been in his truck already when she got home.
do we know for a fact he actually was at work
i don't know why he would have to bury the kids before she came in if his plan was to kill her anyway
but i think the emotional conversation if true is the beginning of the chain of the events not the end
He is taking more risks getting caught actually running around the plant on two separate time frames
like what would be the rush if he had this planned
i keep thinking this was not premeditated but a chain of events (lost control) which if ya think about almost connects to his presentation
a lot of that was was in the context of stuff building up and if not addressed could explode in a negative way
she may not of even had a clue he was at the point he was at
but for some reason (although she did not give a timeframe) her mentioned to her neighbor (am bugged about the two different versions of this however) that he might be having an affair
or the inverse could be true she was gone for six weeks maybe she met someone and fell in love and that was what the emotional conversation was and it triggered him - ( like all the stuff I have put up with and you fall in love with another man)