why smc concept has no things like FVG to cover gap-up in two bars

 The Smart Money Concepts (SMC) framework doesn't have a specific tool for "gap-ups in two bars" because a standard Fair Value Gap (FVG) already accounts for this structure.

In a traditional three-bar FVG, the gap is measured between the wick of Bar 1 and the wick of Bar 3. However, when an actual market gap-up (or gap-down) occurs between two consecutive bars, SMC handles it through specific price action rules rather than inventing a new term.

Here is exactly why SMC handles a two-bar gap without a unique acronym:

1. The Opening Gap Is an Automatic Void

When a market closes at one price and gaps up significantly on the very next bar's open, the entire space between those two bars contains zero trading volume.

SMC Rule: In SMC, this is treated as the ultimate form of imbalance or a liquidity void.
The "Invisible Bar": Many SMC traders mentally treat a massive two-bar gap as if there were an invisible, ultra-aggressive momentum bar between them. Because the algorithm delivered price inefficiently without offering bidirectional trading, the market views the entire gap space as an unfilled target that price will eventually want to reprice (fill).

2. It Usually Disappears on Lower Timeframes

SMC relies heavily on fractal market structure (looking at the same price action across different timeframes).

A clean two-bar gap-up on a Daily chart or a 4-Hour chart doesn't look like a two-bar gap if you zoom in.
If you drop down to a 15-minute or 5-minute timeframe, that sudden overnight or session gap is represented by a rapid, consecutive series of aggressive, large-bodied candles.
On those lower timeframes, standard three-bar FVGs will naturally form all the way up the move. Therefore, a separate "two-bar FVG" concept is redundant.

3. How to Draw the Inefficiency in a Two-Bar Gap

If you are looking at a chart where price gaps up from Bar 1 to Bar 2 without a third bar yet, SMC traders map the imbalance like this:

For a Gap-Up: The area of imbalance is measured from the High (or Close) of Bar 1 to the Low (or Open) of Bar 2.
The Result: This creates a visual box of delivery inefficiency. Because it functions identically to an FVG (a magnet for future price to retest and mitigate), traders simply label it a Liquidity Void or an Imbalance (IMB) rather than overcomplicating the terminology.

Are you seeing these two-bar gaps on daily stock charts (overnight gaps) or on crypto/forex intraday charts? If you share the specific market you are trading, I can explain how to find the hidden FVGs inside those gaps.