akaSylvia
Thanks. I did read the Sherrif's report yesterday and as you point out it specifically states the Captain exhibited no bizarre behaviour prior to departure.
My reference to the benefit of hindsight had in mind rather more subtle clues than what might be described as 'bizarre behaviour'. For example how did he react to his lateness and missing the crew brief? Apologetically or otherwise? If the latter I might with hindsight consider that worth considering in the full analysis.