If you happen to hear someone’s berachah as he davens the silent shemoneh essrai, you do NOT answer amen!
At the end of this week’s sedra, the Torah states a mitzvah to make a ramp going up to the mizbai’ach, as opposed to steps, which might result in a posture close to immodesty–which would be considered disrespctful towards the stones of the mizbai’ach. See and learn how we are to act respectfully towards even the unfeeling stones of a mizbai’ach–certainly we should be concerned with showing all proper respect to the Mikdash M’aht itself !