In General Not recommended, need to avoid doing so. If there is any exception that should have clear permissions from your higher management. Internal resources can be systems, documents etc. and subject matter experts from Development or QA or from other departments or higher authorities so on… When sharing internal systems or documents required to check and made sure that there is no confidential data or not sharable Intellectual property details exists and so on.. You have the required permissions to share. Note: providing internal resources may require access or require creating specific access permissions...... Connecting Cross-functional or other internal team members, be clear that you’re the point of contact and any follow up need to get back to you. Establish a clear understanding to make sure engagement is for that exception/case in point only; any other need requires to follow standard process of engagement.