Match two transactions as one transfer
Move $400 from checking to savings and both accounts record it, so the outgoing half used to count as $400 spent. Oath now spots the pairs at the top of Accounts and links them in one pass; uncheck one to leave it, or mark it not a transfer for good. After you link a card payment once, the next one between the same two accounts links itself and Accounts tells you, with Undo. Keep it once and later ones link without asking; change that in Automatic links. Each half names the other account, and a note stays on both.