~たると ... たるとをとわず => regardless of; irrespective of; no matter~ N1
Simultaneously
まずは => Temporary, first of all N5
Consider it
... はずみ.... => So N2
Result
…はずではなかった => cannot be (impossible) N3
Surprised
~はいわずもがなだ      => need not to say N1
~ににあわず (に似合わず ) => ~Different from N1
Evaluate
... たはず => it must be; it should be (expectation) N4
Speculation
... るとか ... るとか => それとも... または N4
Demonstrate by example
も[構「かま」]わず => Without considering A N2
Considering, Concerning
…ば…はずだ => If ... then perhaps ... N3
Speculation
はずだ/はずがない => it must be; it should be (expectation)/cannot be (impossible) N3
…はずだった => it must be; it should be (expectation) N3
Plan