The Parkhead side succumbed to a late Oscar Cardozo goal in the Stadium of Light to see their dismal group stage record extended to 14 games without a win outside Glasgow.
Strachan said: "A point against Benfica would have been really excellent but we are definitely not out of it, you never know what can happen. We qualified with nine points last season and at the moment the teams in the group have six, six, three and three."
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