... だろうが、... だろうが => Whether it's ... or ... N3
Demonstrate by example
合う => do something together N3
…ば…だろう => If ... then perhaps ... N3
Speculation
なんて…んだろう => how (beautiful, etc.); what a ~ N3
Exclamatory
[合「あ」]う => To do A together/mutually N4
Secondary Verb
んだろう => I think; it seems; probably N4
Speculation
どんなに…だろう(か) => how…!; what…! N3
Emphasis on degree
からこそ/~ばこそ/こそ => precisely because ~ N2
ばこそ => only because ~ N1
なんと~のだろう => how (beautiful, etc.); what a ~ N3
Description
そんな => Like that N4
Level
~でなくてなんだろう => must be; is definitely ~ N1
Emphasize