overcast questions

Hey all!!

I use Overcast as my main podcast app. I switched to that for it's level of customization that I couldn't find on Podcasts. I have Stitcher and Podcasts and I still use them both, but Overcast is my main app.

I have a question that I hope you can help me with.
I listen to podcasts and audiobooks and the like at night when I fall asleep. And this podcast I listen to, Alexa won't play it if I say the name. I have 2 podcasts like that. So, I've been using Overcast. I get the podcast, and hook my ipad to my boom box via bluetooth, and play the podcast through there. It seems easier than searching in the Alexa app for it, plus, if you have to search for it manually, it doesn't play episodes continuously. So, when I got my radio, I decided to try & see if this solution would work. The problem I have is, I can't get it to play continuous eppisodes. I have the setting turned on for that too. My questions are:
1. How do you get it to play episodes continuously? I'd like it to do that, because it's a bit disruptive to sleep every time I have to select a knew episode.
2. Do I have 2 subscribe to the podcast for this to work?
I only ask because I'd like to avoid subscribing, because I'd like to avoid downloading episodes if I can, because my ipad storage is not very big (15Gb.)
3. If I have to subscribe for this to work, how can I avoid downloading episodes if possible?

4. If there's no way to do this with this app, what app would you recommend that would do what I want to do?

I know some of these may seem like really dumb questions. And I feel like there's a way to make this work, but I just haven't found it yet. And it seems like 1 of those things that should be easy to figure out. And I feel like it's 1 of them things too where once you tell me, I'll be thinking: wow. I'm an idiot. Why the heck didn't I think of that?`
And I know some of you on here use Overcast. That's 1 of the reasons I got it, because it had such good recommendations on here. Not to mention full voiceover support as the dev makes a point to mention in the disscription. And it was free to boot!! So any help you could give would be greatly appreciated!! Thank you all in advance!! :)