I have put together (as someone requested!) a map and chronology of how the back and forth between Paul and the Corinthians most probably happened. Enjoy. Paul is talking about slides 14 and 15 below.
So having come to Troas
to proclaim the Gospel of Christ,
even though a door stood open to me,
in the Lord.
I did not have peace in my spirit,
by not finding Titus my brother,
but I bade farewell to them,
and left for Macedonia.
Be thou a bright flame before me,
Be thou a guiding star above me
Be thou a smooth path below me
Be thou a kindly shepherd behind me
Today – tonight -forever
Amen.
St Columba