Can you cast it to your android tv from another device? That’s what I’ve been doing.
You can always cast from a chromecast tab
TSN now has apps for pretty well everything. What "AndroidTV" do you have that has no TSN app?
Are you unable to find the TSN app on Google Play on Android TV (or by searching from the apps tab on Google TV)? It would be helpful to know which region you're in, the model of the Android TV device and it's version of Android.
As an additional data point: https://play.google.com/store/apps/details?id=ca.tsn.mobile.android is marked as not compatible with my Nvidia ShieldTV.
There was a mention of the Android TV app finally being available, and the support page also acknowledges it.
Fibe TV will only work for Fibe TV customers. You might be able to cast the stream from the phone app tho?
There's no TSN app in the Play Store on my Bravia (Toronto, on Bell Fibe connection).
The TSN online accounts don't work with Fibe TV.
Only thing that's sorta worked for me has been to Chromecast from the Android app which is a pile of hot garbage.
The Android app has so far: crashed my Pixel 7 Pro multiple times. Crashed my TV once while casting. Locked out volume control on my TV requiring a hard reset. Crashed the head unit on my car(!) while plugged into Android auto to listen to the audio while driving.