Perfectly viable connection, even if the Islamic State of West Africa didn't pull the trigger.
However, the one thing that I will give you is the fact that even if the above connection was somehow not possible, the fact remains that a terrorist attack occurred in retaliation to a bomb-maker's arrest. This bomb-maker, who just so happened to be directly tied to the Paris attacks, was evidently in good standing with ISIS since someone had to make the bombs for yesterday's attack. This means that this bomb-maker has some actionable intelligence.