に関わらず/に関わりなく => in spite of; regardless of ~ N2
に関して => about; regarding; related to ~ N3
決して~ない => never; by no means ~ N3
を契機に => as a good opportunity/chance to N2
Expected
を[機「き」]に => Use A as an opportunity N1
Time, Situation
[決「けっ」]して~ない => Won’t, isn’t N3
Will, Decision, Doing
[関「かん」]して => About A, With relation to A N3
Considering, Concerning
に関わって => to relate to; to have to do with; relating to ~ N2
を[契機「けいき」] => As a good opportunity A, (do) B N2
Information, Report
に決まっている => certainly; I’m sure/certain that; it must be the case that ~ N2
に[決「き」]まっている => A is a given, A must be the case N2
Information, Report
をきっかけに/を契機に => with… as a start; as a result of; taking advantage of N2