You never want to bridge between finishing your cycle and PCT. Remember that when you stop your cycle, you don't just stop. The steroid esters are built up in your body and slowly are removed over the course of weeks/months.
If you want to bridge, you do it AFTER your PCT and before your next steroid cycle.
The key to bridging between steroids cycles is to bridge with non-suppressive compounds like SARMS. If you bridge with suppressive compounds like steroids, you aren't actually bridging because your natural testosterone production will be suppressed. You are basically just staying on year round then. Not a good idea.
Bridging with SARMS basically looks like this -
1. Run your cycle.
2. After your cycle run a good pct protocol such as the perfect PCT:
http://www.evolutionary.org/the-perfect-post-cycle-therapy-pct/
3. After the PCT protocol, run a SARMS bridge - such as the SARMS triple stack:
http://www.evolutionary.org/the-SARMS-triple-stack-protocol
4. After the triple stack, run a mini PCT. 4 weeks of the following:
HCGenerate ES at 5 capsules/day
5. Then wait 3-4 weeks, ideally get blood work done to make sure everything is in the normal range and start your next cycle.
With doing 1-5 you will continue growing off cycle and your natural testosterone production won't be suppressed.