No you can't transfer miles but you can use miles for a third party booking. Can't be done online so when you find what you want online ring them and book by phone they should be able to use the miles required from both your accounts, you will both need to be available to speak to confirm use of miles.
I have never tried but my Brother has and had no problem.
2.5 You can hold only one Flying Club account at any time. Miles cannot be transferred between Flying Club accounts.
4.1.10 We will issue a reward to a third party at your request, but once issued rewards are not transferable. Complimentary companion reward tickets and companion tickets are not applicable. Only you as a member may authorise the deduction of miles or issue of rewards from your account.