Trying to get into industrial controls. Are DCS and PLC different paths to take in terms of education?

To preface, I’m currently in the alarm / home automation field. I also have completed trade school for electricity. I also messed around a lot with programming many years ago.

I work independently doing anything from running circuits to troubleshooting pool automation system. (Think relays triggering other relays that control actuator motors for valves)

I’m super bored and see no potential for learning or improvement.

So back to the question:

One job local to me DCS Tech. If I were to, in theory, just start taking some courses. Would it be a bad idea to start with PLC? Or should I focus on any information I can get with DCS. Do they compliment each other or should I strictly stay with one or the other depending on the job I’m looking for?