Compass pilots are eligible to flow through to Delta after 30 months of employment AND are a captain.
Delta pilots are eligible to flow back at the rate of 20/month (training limit) and can flush all but the top 10% of pilots at Compass.
There are others here that can explain the LOA between Delta and its pilots, but for the near term, furloughs are not expected. It is IF they furlough, not WHEN.