Ac 11:30 14:23 15:02 16:04 20:17; Ac 20:28; Php 1:1 (1Ti 3:1,12), 1Ti 5:17-22. (Titus 1:5), (Titus 1:7) etc.
The NT used the term bishop and the term overseer interchangeably - especially Paul.
I love the actual meaning of the NT, not the derived meaning that one may assume upon arising each morning, or during a long session down at the pub.
Not quite. The NT Greek used the term “episkopous” (or the appropriate form), which has the sense of an overseer and the modern English “bishop” is derived from that.
While the Greek “presbyterous” (or the appropriate form) is used to refer a broader group, “older man” or “elder”, particularly in a spiritual sense.
In the instances you cite,
Acts 11:30, 14:23, 15:02, 16:04, 20:17, 1 Tim. 5:17,19, Titus 1:5 the term “presbyterous” reads in the Greek and the NAB transliterates it as “presbyter”.
Acts 20:28 and Phil. 1:1 read “episkopous” in the Greek and are translated s “overseer” in the NAB.
1 Tim. 3:1 and Titus 1:7 read “episkopous” in the Greek and the NAB translates it as “bishop”.
I can think of no reason for this inconsistency of translation in the NAB unless it is to lend support for the use of the title “Bishop”.
So it is not Paul but the translators who interchange these terms.