[次第「じだい」]だ => It depends on A N2
Based, Focused, Depending on
[次第「じだい」]では => Depending on A, B may change N2
Based, Focused, Depending on
と[相「あい」]まって => Along with A N1
Lists, examples
に[相違「そうい」]ない => No doubt N2
Information, Report