Solana Labs co-founder posted on social media that the best case for confirming the delay in median on Solana is:

1. Users directly send tx to block producers in the middle of the block (100 milliseconds);

2. Include transactions before the end of the block (200ms);

3. Validators receive the final fragments and votes (100 milliseconds);

4. Users observe 2/3+X of OC votes (100 milliseconds) for approximately 500 milliseconds.

Alternatively, it could be 300 to 700 milliseconds depending on the position of the tx in the block.